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RIP,

No problemo with RIPPER...but my rifles aren't finished yet so I can't shoot anything except my 300 RSAUM or 1911 45 ACP! Frowner I'm still a month or so away from having my two M98s in my hands...I'll have to phone Steve tomorrow for an update.


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
Posts: 4954 | Location: Central Texas | Registered: 15 September 2007Reply With Quote
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500 GR (Grim Ripper)?
I like 500 RIP better but I know this is more of a dictator than democracy Wink


577 BME 3"500 KILL ALL 358 GREMLIN 404-375

*we band of 45-70ers* (Founder)
Single Shot Shooters Society S.S.S.S. (Founder)
 
Posts: 27614 | Location: Where tech companies are trying to control you and brainwash you. | Registered: 29 April 2005Reply With Quote
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quote:
Originally posted by RIP:
Jim,
It is now unofficial, as suggested by Doc M, we may call it the "500 Ripper" as the official metric/Springfield designation does not have enough macho appeal. Wink

We need to get your rifle shooting.
Then you will spend less time calculating ballistic coefficients,
and more time verifying repeatability of drop data.
Michael in Germany makes the third musketeer. tu2



500 RIPPER

Now By Damn That's Better!

All this damned 12 x 10 x 49 divided by 68 and then add 50 and crap was giving me a F*****G Headache! Not only that, but I could not make out what it was--So official, unofficial did not matter to me, if I was going to remember this thing, I was going to use 500 RIPPER one way or the other anyway. Ya'll can call it anything you want of course, it's yours, but this is the only way I can see it!


And yes--all the BS BC Crap is driving me nuts--I don't want to know! Thank you very much!

Jim and Tanz--Go shoot something please!!!!!!!!!!!!!!!

LOL


hilbily


http://www.b-mriflesandcartridges.com/default.html

The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List!
Live Outside The Box of "Conventional Wisdom"

I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else.
 
Posts: 8426 | Location: South Carolina | Registered: 23 June 2008Reply With Quote
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Michael, Maybe you can use BC for Buffalo Culling!
 
Posts: 2837 | Location: NC | Registered: 08 July 2006Reply With Quote
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quote:
Originally posted by srose:
Michael, Maybe you can use BC for Buffalo Culling!



Now by Damn, there is a wonderful thought--Very Well I declare it So!

From this day hence, BC is now know as "Buffalo Culling", and no longer has any other meaning!

Thank you Sam--You are a Genius!

M


http://www.b-mriflesandcartridges.com/default.html

The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List!
Live Outside The Box of "Conventional Wisdom"

I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else.
 
Posts: 8426 | Location: South Carolina | Registered: 23 June 2008Reply With Quote
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quote:
Originally posted by michael458:
quote:
Originally posted by RIP:
Jim,
It is now unofficial, as suggested by Doc M, we may call it the "500 Ripper" as the official metric/Springfield designation does not have enough macho appeal. Wink

We need to get your rifle shooting.
Then you will spend less time calculating ballistic coefficients,
and more time verifying repeatability of drop data.
Michael in Germany makes the third musketeer. tu2



500 RIPPER

Now By Damn That's Better!

All this damned 12 x 10 x 49 divided by 68 and then add 50 and crap was giving me a F*****G Headache! Not only that, but I could not make out what it was--So official, unofficial did not matter to me, if I was going to remember this thing, I was going to use 500 RIPPER one way or the other anyway. Ya'll can call it anything you want of course, it's yours, but this is the only way I can see it!


And yes--all the BS BC Crap is driving me nuts--I don't want to know! Thank you very much!

Jim and Tanz--Go shoot something please!!!!!!!!!!!!!!!

LOL


hilbily


Michael,

thank you for the incentive. I just have to wait for a window of opportunity. I'm sure that Jim is just as anxious.

Meanwhile, we test what we can, which is to plot trajectories and consider best loads, bullets, hunting plans, etc.
And I am waiting for test results and potential opportunities of rebarreling a yet-to-be-fired first wildcat (500AccRel). Joy.

And whenever doing my share of BC Buffalo Culling, I will duly check the ballistic coefficients and tables of JBM ballistics to make sure that we have enough energy to gut, quarter, package, and wrap any critter 250-400 yards.

I get to shoot some paper and waterbottles in August, and maybe play tag with the critters in October.


+-+-+-+-+-+-+

"A well-rounded hunting battery might include:
500 AccRel Nyati, 416 Rigby or 416 Ruger, 375Ruger or 338WM, 308 or 270, 243, 223" --
Conserving creation, hunting the harvest.
 
Posts: 4253 | Registered: 10 June 2009Reply With Quote
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Tan are you going to be in Kali in August? I should have my .500 in hand by then so perhaps we can get together and kill some milk containers. Drop me a note.


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
Posts: 4954 | Location: Central Texas | Registered: 15 September 2007Reply With Quote
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quote:
Originally posted by boom stick:
500 GR (Grim Ripper)?
I like 500 RIP better but I know this is more of a dictator than democracy Wink


There is already a 404 RIP.
That is short for "404/.416 Rigby Improved Plus."
It is a full length Rigby with shoulder changed from 45-degree to 20-degree and necked up to .423-caliber.

Calling this 500 as another RIP cartridge would be confusing,
unless we called it the "500 RIP-Short."

Or "500 Rip-Snort."

OK. 500 Rip-Snort.
Doc M can still call it the 500 RIPPER if he wants. Big Grin
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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quote:
OK. 500 Rip-Snort.
Doc M can still call it the 500 RIPPER if he wants.



HEH..............

Yes, I think I will stick with 500 Ripper!
rotflmo


http://www.b-mriflesandcartridges.com/default.html

The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List!
Live Outside The Box of "Conventional Wisdom"

I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else.
 
Posts: 8426 | Location: South Carolina | Registered: 23 June 2008Reply With Quote
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Yeah, me too. Wink
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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quote:
Originally posted by RIP:
Yeah, me too. Wink



Jesus RIP, you are as bad with this as I am with the B&M logos! LOL...................

hilbily

Don't worry, I will be thinking on this today



http://www.b-mriflesandcartridges.com/default.html

The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List!
Live Outside The Box of "Conventional Wisdom"

I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else.
 
Posts: 8426 | Location: South Carolina | Registered: 23 June 2008Reply With Quote
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Yep,
If it ain't B&M or MDM it puts Doc M to sleep. Understandable. animal
404 RIP, 500 RIPPER, that is distinction enough. tu2

The reamer for this cartridge is called the "500 XXX" at Dave Manson.
It is released to the gun trade. Big Grin

I wanted to call it the .500 Tornado, but Michael Uekotter (member 2RECON) informed me that Waffen Jung of Germany liked to collect royalties.
For use of that "Tornado" name, even the German Air Force had to pay to apply it to a weapon.
Trademark of a word as applied to a weapon system. nilly







No more "Tornado" now at AmmoGuide: 12.7x68mm Magnum/49-10
AKA: 500 RIPPER
beer



Hornady Custom dies: Perfect match of chamber reamer and reloading dies, using Lapua (civilian) .338 Lapua Magnum brass.



This is not just a long range plains game and varmint cartridge. Wink
94 grains of Benchmark Extreme with a 500-grain CEB DGBR brass FN solid bullet is sub-MOA and just under 2400 fps for a gentle giant killer:



Another load (97.0 g Benchmark/2473 fps with 500-grain CEB DGBR-FN) will be added at AmmoGuide,
and may be compared to QuickLOAD predictions below, with 97.0 grains as nominal:



 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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Newest load at AmmoGuide is now #18 of 21 loads listed so far, for the 500 RIPPER.
An "Average Load", not full, not compressed:

500 g CEB DGBR-FN ... Hodgdon Benchmark
97.0 g
3.520"
2473 fps
6793 ft-lbs
24.0"

QuickLOAD velocity prediction of 2405 fps was low on this bullet and powder combination.
Chronographed (5-yard) belocity was 68 fps faster.
With some combinations of bullets and powders, QuickLOAD may predict higher than obtained velocities, of course, even with the 500 RIPPER. Wink
Powder lots vary, etc.
Overall, it has averaged out to very close to reality for the 500 RIPPER.
Of course I have no pressure measurements in reality,
but no problems indicated,
and no MAX loads reached yet. thumb
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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Uh-oh ...
Above QuickLOAD was from before I knew
the actual gross water capacity, and the COL/OAL
of the load actually fired was longer too.
Somewhat compensatory errors, but not by much.
I bet the QuickLOAD velocities and pressures would
have been higher and closer to reality if the inputs
were closer to reality.
Also the banded brass solid bullet start pressure
needs to be reduced by a "non-bearing" factor.
IMHO.
I bet Sir Jim could fix it if he had access to QuickLOAD,
which I do not right now.
sofa
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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Names that never got considered.
500 Big Foot or 50 BF
Fifty Yeti hilbily
500 Kracken "Release the Kracken!"
I think I will have to design the Sixty Sasquatch based on the 416 Barrett case Wink


577 BME 3"500 KILL ALL 358 GREMLIN 404-375

*we band of 45-70ers* (Founder)
Single Shot Shooters Society S.S.S.S. (Founder)
 
Posts: 27614 | Location: Where tech companies are trying to control you and brainwash you. | Registered: 29 April 2005Reply With Quote
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quote:
Originally posted by boom stick:
Names that never got considered.
500 Big Foot or 50 BF
Fifty Yeti hilbily
500 Kracken "Release the Kracken!"
I think I will have to design the Sixty Sasquatch based on the 416 Barrett case Wink



Hey, don't be hogging all that stuff you smoking out there!

Learn to Share!

hilbily


http://www.b-mriflesandcartridges.com/default.html

The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List!
Live Outside The Box of "Conventional Wisdom"

I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else.
 
Posts: 8426 | Location: South Carolina | Registered: 23 June 2008Reply With Quote
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"500 XXX" as originally told to Dave Manson,
i.e., "500 Censored" and fill in the blank as whimsy
dictates that day,
e.g., "500 White Lightning."
Seems to be the pattern so far.
500 XXX. tu2
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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500 White Lightning! animal

Too Much! Speaking of which, friend of mine brought me a small jar of that fine stuff a couple of weeks ago, and it is Soooooooooo Goooood! Sipping stuff you know!

Still, I hang with the Ripper! I think perfect, denotes many things, including it's developer.

.500 Rules the 500 designations.

Also I am sure many of us saw the Midway Blemish Sale. Well there are a couple of .500s on there, of note what appears to have to be the 500 gr Hornady, which I got 250 of yesterday. Wonderful practice, lower velocity bullet. Keep to 2000-2100 and it is very happy. Also had some of the 300 Flex tips, wanted 250 of those as well, but only had 100 left! So I got those. About all I seen of any use, had lots of rat bullets.

Just FYI, might want to look at those 500/500s.

M


http://www.b-mriflesandcartridges.com/default.html

The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List!
Live Outside The Box of "Conventional Wisdom"

I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else.
 
Posts: 8426 | Location: South Carolina | Registered: 23 June 2008Reply With Quote
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I missed out on the blems, but still have some of Hornady 300-grain FTX and 500-grain JFP and the XTP.

Those are nice plinking bullets, and they can be loaded to duplicate the CEB wunderbullet trajectories, close enough for good practice loads.
They might even be good bullets for game if used in the proper bracket of velocity at impact.
And they even have a published G1 BC!!!tu2

Use the Hornady .500/300-grain FTX at 3050 fps (BC = .200, SD = .171):
+1.3"@50yds, +3.0"@100yds, +2.2"@200yds, -6.0"@300yds
to mimic trajectories of either
CEB MTH .500/430-grainer at 2650 fps
or
CEB ESP W350/360-grain Raptor at 2900 fps,
in the ".500 Ripper."

Use the Hornady .500/500-grain XTP at 2150 fps MV (BC = .185, SD = .275):
+0.4"@50yds, 0.0"@100yds, -10.1"@200yds, -38.2"@300yds
Or
+1.5"@50yds, +2.2"@100yds, 0.0"@150yds, -5.8"@200yds, -31.6"@300yds
for useful velocity on game.
Or
to simulate CEB .500/500gr DGBR FN solid trajectory and recoil try 2400 fps MV:
+1.7"@50yds, +3.0"@100yds, 0.0"@183yds, -1.6"@200yds, -20.3"@300yds

That last one also allows experimentation with a rainbow trajectory. Cool
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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RIP

Got my blems yesterday, indeed 500 Hornady and 300 Hornady. I could not find any "Blems" on the Blems? Looked great.

For me, this side, the 500 Hornady is excellent in the 50 B&M Alaskan lever guns, running 1850-1900 in the 18 inch guns. The 300 Flex is excellent in the 50 Super Short, running 2400 or so. Good plinking, and toting around bullets, and I know the 500 Hornady in the field. The 300 Flex tests very good even up to 2400, and would make a good light game taker I am sure, even though I have not used it in that capacity.

Sam made that forming die for me, I can take the 500 Hornady, make a RN Soft out of it, and it is very good in the 50 B&M at 2000-2100, and makes an excellent practice load for those guns.

So the blems are pretty spiffy for me here--I have enough .500 caliber cartridges here to utilize almost any bullet.

Of course when things truly get Serious, we move straight to BBW#13s of some sort!

M


http://www.b-mriflesandcartridges.com/default.html

The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List!
Live Outside The Box of "Conventional Wisdom"

I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else.
 
Posts: 8426 | Location: South Carolina | Registered: 23 June 2008Reply With Quote
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Yep, Hornady pistol bullets from 300 to 500 grains have a lot of good uses in all these .500-caliber rifles.
Doc M, you have done very well in breathing new life into the .500 caliber.
I agree that the .500-cal has the .510-cal beat for overall usefulness now.: CEB, North Fork, et al.

I noticed on the other thread that Jim mentioned a BC of .600 for the 430-grain MTH,
as reported by Dan The Man of CEB.

Jim and Dan did very well in designing that bullet. Glad I got in on it when they produced the batch.
Thank you Jim. beer

.600 BC actually fits my unscientific data well.
I plugged that into the Hornady calculator, free on-line, just for fun,
with the more practical zero for 2.0 inches high at 100 yards. Makes it right-on at 200 yards.
No science intended.
No altitude entry, so I assume sea level.
Out to 500 yards to show why I should not shoot that far: hilbily

--------------------------------------------------------------------------------
Cartridge: 500 Ripper with CEB MTH
Rifle: Winchester M70, 24" barrel, 1:12" twist
Sight Height: 1.5"
Bullet Weight (grains): 430
Ballistic Coefficient: .600
Muzzle Velocity (fps): 2660 fps (corrected to nearest 10 fps at muzzle, 5-yard velocity = 2651 fps)
Temperature (F): 59
Barometric Pressure (hg): 29.53
Relative Humidity: 78%
Altitude: sea level
Zero Range (yards): 200
Wind Speed (mph): 10 (cross wind)

Ballistics Table in Yards
Range (yards):
0 (Muzzle)
50
100
200
300
400
500

Velocity (fps):
0: 2660
50: 2586
100: 2513
200: 2370
300: 2232
400: 2099
500: 1970

Energy (ft.-lb.):
0: 6755
50: 6384
100: 6028
200: 5364
300: 4758
400: 4207
500: 3707

Trajectory (200 yd. zero):
0: -1.5
50: 0.9
100: 2.0
200: 0.0
300: -8.2
400: -23.3
500: -46.4

Wind Drift (inches):
0: 0.0
50: 0.1
100: 0.5
200: 2.3
300: 5.3
400: 9.9
500: 16.0

--------------------------------------------------------------------------------
Ballistics Calculator v1.0
Hornady Mfg, Inc., by ARIS, Inc.
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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W350 ESP Raptor from CEB, weighing 360 grains with tip,
BC = .260 actually fitted up within 1" at 300 yards trajectory for my unscience.

So, a most practical 2.0" high at 100 yards gives a dead-on range of 205 yards, and only 0.3" lower at 300 yards than the MTH above.
Unscience:

Assume same sight height of 1.5" for trajectory comparison between the two bullets.
Actual rifle used for this bullet had 1.7" sight height.
This is just a calculator "what if."
Raising the sight height to 1.7" with same +2.0" trajectory at 100 yards:
Extends the dead-on-range by 5 yards to 210 yards.
Raises the trajectory at 300 yards by 1/2" to -8.0".
--------------------------------------------------------------------------------
Cartridge: 500 Ripper with CEB ESP Raptor
Rifle: BRNO ZKK 602, 24" barrel, 1:12" twist
Sight Height: 1.5"
Bullet Weight (grains): 360
Ballistic Coefficient: .260
Muzzle Velocity (fps): 2920 fps (corrected to nearest 10 fps at muzzle, 5-yard velocity = 2903 fps)
Temperature (F): 59
Barometric Pressure (hg): 29.53
Relative Humidity: 78%
Altitude: sea level
Zero Range (yards): 205
Wind Speed (mph): 10 (cross wind)

Ballistics Table in Yards
Range (yards):
0 (Muzzle)
50
100
200
300
400
500

Velocity (fps):
0: 2920
50: 2740
100: 2568
200: 2242
300: 1941
400: 1666
500: 1426

Energy (ft.-lb.):
0: 6815
50: 6003
100: 5271
200: 4018
300: 3010
400: 2220
500: 1625

Trajectory (200 yd. zero):
0: -1.5
50: 0.8
100: 2.0
200: 0.3
300: -8.5
400: -26.5
500: -57.2

Wind Drift (inches):
0: 0.0
50: 0.3
100: 1.2
200: 5.0
300: 12.3
400: 23.6
500: 39.8

--------------------------------------------------------------------------------
Ballistics Calculator v1.0
Hornady Mfg, Inc., by ARIS, Inc.
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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It is going to be a couple of months before I can add some more loads to the ammoguide list.
Will include North Fork 375-grain and 450-grain FPS and CPS.

Also will revisit the 300-yard shooting with the CEB ESP Raptor and MTH bullets calculated on above.

Will get both rifles set for 2.0" high at 100 yards.
Then will see if both are about 8" low at 300 yards ... at least three 3-shot groups for each bullet, at 100 yards, and 300 yards.
Will do it when I can. I can think of few things more fun than that kind of stuff. tu2
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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RIP. beer


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
Posts: 4954 | Location: Central Texas | Registered: 15 September 2007Reply With Quote
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quote:
Originally posted by RIP:
It is going to be a couple of months before I can add some more loads to the ammoguide list.
Will include North Fork 375-grain and 450-grain FPS and CPS.

Also will revisit the 300-yard shooting with the CEB ESP Raptor and MTH bullets calculated on above.

Will get both rifles set for 2.0" high at 100 yards.
Then will see if both are about 8" low at 300 yards ... at least three 3-shot groups for each bullet, at 100 yards, and 200 yards.
Will do it when I can. I can think of few things more fun than that kind of stuff. tu2
I think +2.0" at 100 yards is a very appropriate zero for both bullets and I don't reckon any of us will complain about waiting a few months for additional loading and test data. Heck I'm still months away from my rifles being ready so it's rat calibers for me until then.


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
Posts: 4954 | Location: Central Texas | Registered: 15 September 2007Reply With Quote
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Jim,
My condolences to both of us.
Your gunsmithing wait.
My delays due to work intruding on my hobby.

I corrected my typo pointed out by the quote above.
Will be 100 yds and 300 yds, same as last time.
No 200 yards. I am no scientist, afterall, getting more than barely enough data is not my style.
And I am prone to typos and all kinds of human error.
OCD/ADD. Wink
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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RIP,

Very true condolences to both of us. I can't blame my gunsmith; delays have been my fault changing specs, parts, etc... then waiting for new parts, etc... Now we're waiting for Duane to make another run of 4MJ bottom metals (we need 2 and Duane is all out) and until they're run we're pretty much at a standstill.

Oh well, wife is eyeballing some painting she wants done so guess I'll be busy with a paint brush. Frowner


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
Posts: 4954 | Location: Central Texas | Registered: 15 September 2007Reply With Quote
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RIP

Got an email from John at North Fork this morning, and he wants to run 10 or so samples of the solids before approval, just to make sure all is good to go. I mentioned you might be out of the loop for a bit, and suggested that he send samples here, I get them tested, and I am pretty sure that anything that works with the B&Ms, MDM, will work with the Ripper? With your approval, I will check things out for the both of us before the big order is done?

Michael


http://www.b-mriflesandcartridges.com/default.html

The New Word is "Non-Conventional", add "Conventional" to the Endangered Species List!
Live Outside The Box of "Conventional Wisdom"

I do Not Own Any Part of Any Bullet Company, I am not in the Employ Of Any Bullet Company. I do not represent, own stock, nor do I receive any proceeds, or monies from ANY BULLET COMPANY. I am not in the bullet business, and have no Bullets to sell to you, nor anyone else.
 
Posts: 8426 | Location: South Carolina | Registered: 23 June 2008Reply With Quote
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Michael,
Thanks for taking care of that.
Nobody better than you to do it right.
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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500 Ripper is now aka 500 BUM.
500 Berry-Uekotter-McGee.
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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There you go changing names again.
Cool

I'm just hoping someone comes up with a short-throated reamer soon in the US for the 500 AccR.
If not, I may end up with a lot of .510 brass, bullets, and dies that won't fit a BUM Whatever.


+-+-+-+-+-+-+

"A well-rounded hunting battery might include:
500 AccRel Nyati, 416 Rigby or 416 Ruger, 375Ruger or 338WM, 308 or 270, 243, 223" --
Conserving creation, hunting the harvest.
 
Posts: 4253 | Registered: 10 June 2009Reply With Quote
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416Tanzan,

Not really a name change, just another AKA for the "12.7x68mm Magnum/49-bore/.500-caliber/.338 Lapua Magnum Improved of 2010."
How many other cartridges do you know of with a "double-magnum" name?
This is a magnum's magnum, at least in title.
Cool
"500 BUM" is shorter and just as memorable a name as "500 Ripper."
Even Doc M might be able to remember "500 BUM" and it is not quite as evil sounding as "500 Ripper."

What? Got a BUM steer on your first reamer?
Design your own so you don't have to BUM one. tu2
 
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Best
Ultimate
Magnum
500 BUM-W?
what's the 'w'?

As for doing one's own reamers, I was trying to do an ultimate low cost 500, for responsible, self-guided walks in the forest.
Double barrels have already upset that goal.

Adding a reamer, $200?, a set of dies 200?, and then another set of brass sort of undermines that effort. And on reamers, does one need to add a 'rougher$200'?

On brass, I suppose the cheapest route would be to get the Hornady 416 stuff and cut off the mouthpiece, just like a good cigar. Then fireform and probably needing a neck-ream.


+-+-+-+-+-+-+

"A well-rounded hunting battery might include:
500 AccRel Nyati, 416 Rigby or 416 Ruger, 375Ruger or 338WM, 308 or 270, 243, 223" --
Conserving creation, hunting the harvest.
 
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Tan,

Ok here’s the bottom line. If you already have the parts – bullets, an un-chambered .510 caliber barrel, and 500 AccRel reloading dies – then all you need is a 500 AccRel finish chamber reamer having a freebore length designed for standard hunting bullets rather than the longer/heavier FMJ 50 BMG bullets. You do not need a roughing reamer and the original 500 AccRel Go/No-Go Gauges will work for both.

If you have a pre-chambered barrel…well guess you can basically ignore this entire post.

So if no pre-chambered barrel you need a shorter Freebore 500 AccRel finish chamber reamer…and here are two possibilities…

Contact Jeffe’s reamer manufacturer directly to determine if someone has already had them make a standard throat 500 AccRel finish chamber reamer… And if so, ask them to contact the purchaser for you to ask the purchaser to please contact you.

If not, contact Jeffe to determine if he had multiple 500 AccRel finish reamers manufactured and whether perhaps he has one or more are being held at a single location. And if so, ask if perhaps he’d be willing to send one back to the reamer manufacturer to have them modify the throat dimensions of the existing reamer to accommodate a standard Freebore length.

If the finish reamer manufacturer happens to be Dave Manson, I believe the turnaround is 3 weeks and $30 to alter an existing finish reamer versus 12 weeks and $200 for a new finish reamer.


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
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Yep,
All you need do is have the throat on the original reamer ground down to whatever throat you like.

I am dropping all excess verbiage from the official name of the "500 BUM."

Henceforth it is known only by the designtion on the Hornady Custom Die set, the origin of which will be shrouded in secrecy,
only for "Musketeers" to know:

12.7X68 49-10

Sort of like "The Artist Formerly Known as Prince." Wink



Of course to save time, just skip the metric part and go straight to the U.S. Springfield designation similar to 30-06: 49-10

"Magnum" nomenclature also is now dropped.
Sweet little powerhouse.
Little Red Corvette ... Cool
 
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I’ve pulled this information from a few different forum threads, brought to this thread as Ron will be accomplishing the fire forming with his 12.7x68/49-10 rifle… patriot and bring this thread back to page one.!

I pulled this information from the Good News; Jamison Rides again. thread:
http://forums.accuratereloadin...043/m/3101017971/p/1
quote:
Originally posted by RIP:
Looking good:

http://www.captechintl.com/products.html





Interesting items on their web site logo page:
.408 Chey-Tac and .375 Chey-Tac brass, and says loaded ammo too!

"All calibers are offered as empty cartridge cases and as loaded ammunition.
For more information call us at 1 (605) 791-1974"

The brass as last made by Marc Jamison was best quality stuff.
Hopefully Captech brings all the fine tuning worked out by Marc Jamison to the current operation. tu2


quote:
Originally posted by RIP:
Hi Dave,

Good to hear from you. Glad you are still kicking. Me too. tu2

How many projects do I have on the go, you ask?
Heh, heh, too many, since I never get finished with one before I start another ...

The latest four I am still working on are (forget for now the many more from the past I need to complete load testing):

1. .375/404 Jeffery Saeed of 2012: Loading some ammo for this now, finally got the reloading dies a few days ago from Hornady.

2. 400 Whelen (a "me too" with Rusty McGee doing the workups in his M98 rifle, and building one for me on a Ruger Hawkeye ... one of these days)

3. 12.7x68/49-10: .500-caliber on the .338 Lapua Magnum case. Needs to finish some load development.

4. 500 Mbogo Short/50-12: .510-caliber that is the latest startup, pictured here, formed from Jamison brass,
trimmed from 2.750" blank basic 338 Lapua to 2.700" maximum:
nilly



Did I mention that the Jamison finished .338 Lapua Magnum brass is even more uniform than Lapua brand,
in linear and weight dimensions,
and intermediate in weight between Hornady and Lapua brands? tu2

From the 500 Mbogo Short thread:

Chris Freeman, production manager at Captech International:

Says the Jamison International blank basic brass will be offered again in 2013, whenever they make another run of it.

Sounds like they will offer any blank basic that they routinely make, whenever they make a new batch of it,
and wildcatters can buy it, routinely,
if they get you on the wish list with office manager, Kathy Greenshaw.
Contact info above.

The blank basic is made as a preliminary step for each of the finished brass they make, of course,
and that includes .416 Rigby blank basic that is +2.945" for use in the 470 Mbogo. They do have the bunter for "Mbogo 470" headstamp."
Wink

I am on the wish list for blank basic 30-06 and 338 LM. tu2
quote:
Originally posted by RIP:
Jamison makes 600 Overkill.
I wonder if they would supply "basic blank" 30-06 brass that is +2.5" to use in forming 400 Whelen and such?
I have inquired. Wink

Here is the .338 Lapua Magnum fully formed and the "basic blank" that seems to have a diameter out near where the shoulder will be formed,
that is identical to that of the 500 Mbogo Short/50-12 and the 12.7X68/49-10. tu2

Initial measuring and weighing shows that Jamison is even more uniform than the best of best Lapua brand, though it is lighter than Lapua,
it is just 0.9 grains heavier than the excellent Hornady.

I will not bore with anymore actual measurements, until specifics about a certain wildcat come up on another thread,
except to add that the "blank basic" .338 Lapua brass is exactly 2.750" on average, +/- 0.001" in length,
and weighs 325.6 grains on average, which is 14.2 grains heavier than when it is fully formed, trimmed, and headstamped to .338LM. Cool













Cool


And I pulled this information from the 500 Bateleur: RIP 500 MS thread:
http://forums.accuratereloadin...4711043/m/1681060181
quote:
Originally posted by RIP:
Jim,
Got the brass, thanks.
7 pieces of "Lapua 98" headstamp, and one civilian case that has the pretty annealing.
It will be interesting to but it through the paces Missouri style, "show me." tu2
Whomever shot that brass had it loaded hot in a rifle with a plunger-style ejector:











quote:
Originally posted by RIP:
quote:
Originally posted by buffalo:
I just bought 200 pcs of oncefired military Lapua brass in 338 Lapua.. Around 1$ a piece ... Not bad eh??? Would be good for some extra 500 AccRel brass....


Grab it when you find it. tu2

So far little difference between the milsurp and the civilian stuff.

Average weight of 7 pieces of the milsurp is 341.6 grains, high 342.4 gr, low 340.4.

The one piece of new, unfired, civilian brass that Jim sent weighed 330.9 grains.
One piece of my once-fired .338 LM civilian brass pulled at random weighed 330.6 grains.

All the above weights were after de-capping and FL sizing.
The cratered primers made it tough to measure length, so I decapped them. Wink
Milsurp average length was 2.726", high 2.728", low 2.724".
Max allowed brass length, for .338 LM, IIRC, is 2.724", so trim-to is 2.714".
Jim's new civilian .338LM case was 2.719".
My once-fired .338LM case was 2.724".
No water capacities until after they are fired to 12.7x68/49-10, and trimmed to a uniform 2.650" for this exercise.
Max 2.657" and trim-to is 2.647" for the 12.7x68/49-10.

I cut a milsurp case (MIL) and a civilian case (CIV) with a roto-tool cutoff wheel.
I see no significant difference.
So far only about 11 grains heavier for the MIL case.
That could be from brass alloy used, or lot-to-lot variation between batches?
Anecdotally: The MIL brass may be harder than the CIV brass.
The MIL brass was a little harder to cut ... maybe? Maybe not?
So far, so good. tu2









Hardness of neck and shoulder area might be a requirement for military use. Use once and discard.
The milsurp does not seem to have the signs of annealing after final forming.
Civilian brass is meant to be reloaded.
Lapua does a beautiful annealing on the civilian brass, after the final neck-down from basic cylindrical.
New civilian brass blows out very nicely in fireforming.
If I split any of the milsurp brass necks on fireforming, I will stop and anneal what's left of the sample.
This is a test. Wink
Might be that the milsurp brass just needs to be annealed for best results in fire-forming into 12.7x68/49-10, 500 Bateleur/50-12, 500 AccRel Nyati, etc.

quote:
Originally posted by RIP:
Jim,
That is just some off-centeredness of the thick cutoff wheel.
You try to cut asymmetrically so that the face of the wheel goes down the centerline, and you end up with a "skinny half" and a "full half" of sectioned case,
because of the thickness of the cutoff wheel, crude tool.
It aint' perfect. hilbily
Primer holes are actually same.
Heck, the milsurp and civilian are same throughout, except for annealing or brass composition, by my guess. tu2


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
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RIP

this is what I call "THE BRASS" the head thickness speaks for it self a High pressure brass without any reservations.

I would anneal any case before any necking up would take place.

It would minimize the possibility of microscopic cracks to form and greatly extend the life expectancy of the brass.

Pyzda
 
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Pyzda,
You are right about that.
My annealing with a propane torch and a pan of water is not as pretty as Lapua's but it is not worth risking a case.
Less likely to crack later, even if they survive the initial fireforming.
Might as well get used to annealing the milsurp cases. tu2

Jim,
I see you want me to continue reporting on the test of your milsurp brass on this page.
So be it.
The 500 Bateleur/50-12 has not hatched yet.
The 12.7x68/49-10 "bird of prey" soars already. tu2

That "Lapua 98" brass has a bright and shiny appearance to it that needs some dulling and softening in the neck and shoulder area,
before it gets blown out from .338 to .500 caliber.
Wildcatter rule of annealing:
Anneal before necking up and after necking down,
unless it is new brass that has come from the Lapua factory freshly annealed after being necked down from cylindrical. tu2

 
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Hey Ron,

I've no problem with your reporting the results over in the 500 Bateleur thread, I’ll copy it over here.


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
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I thought these excerpted posts that I placed over in the 500 AccRel throat, reamers, and freebore thread might be of interest elsewhere so here it is… Drawn from:
http://forums.accuratereloadin...043/m/3061083571/p/8
quote:
Originally posted by capoward:
quote:
Originally posted by RIP: Posted 27 October 2012 02:26
Excerpts…
Jamison/Captech International .338 Lapua Magnum blank basic, cylindrical brass starts off at +2.750", average length about 2.753" on a quick re-check.

This is sized in 12.7x68/49-10 die for case body and shoulder.
Then it is trimmed to 2.700".
Then it is necked up and neck sized in 500 Jeffery and 500 Mbogo dies, staying off the shoulder and not belling the case mouth.
Then it is final trimmed to 2.690", minimum length.

I did this to just 3 cases.
Average gross water/case capacity: 132.4 grains
Excerpted from:
http://forums.accuratereloadin...4711043/m/1681060181
quote:
Originally posted by buffalo: Posted 30 January 2012 10:48
I fire formed some brass a few days ago - my 500 Acc Rel rifle almost completed...

Case cap in fireformed brass:
338 Lapua brass (from Lapua): 136 grs water
416 Rigby - Norma brass: 135 grs water
500 Acc Rel brass- once fired (Quality Cartr): 137 grs water
416 Rigby - Hornady brass : 141 grs water
Extracted from: http://forums.accuratereloadin...043/m/5931027531/p/6
quote:
Originally posed by capoward: Posted 23 May 2012 03:52
Excerpts…
Multiple-edited post-excerpts by RIP:
A la Doc M's MIB extractor head spacing research. Using the extractor of a Winchester M70 and the rimless-rim of the case for headspace on fireforming; Just touch off a standard .338LM in a 49-10 chamber… Mine were fire formed with a hot loaded 200-grain Nosler ballistic tip .338/200-grain bullet.

Lapua-brand .338 Lapua Magnum Commercial Brass:
New Unfired Case Length: 2.717"
Fire Formed Case Length: 2.707"
Fire Formed Case Trim Length: 2.647".
Fire Formed Case Capacity: 131.45grs water

Case capacity:
Trimmed Case Length: Fire Forming Commercial: 131.45grs water
Trimmed Case Length: Fire Forming Commercial & Full-Length Resized: 129.9grs water after second full power load and second resizing
Untrimmed Case Length: Hydraulic Forming Die & FLR Unfired Commercial: 123.458grs water
Untrimmed Case Length: Hydraulic Forming Die & FLR Once Fired Military: 108.026grs water
Extracted from:
http://forums.accuratereloadin...043/m/5931027531/p/6

Thanks to RIP for providing the bulk of this information.
Now all three threads have been appropriately updated!


Jim coffee
"Life's hard; it's harder if you're stupid"
John Wayne
 
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