quote:

It was done by inserting the .416 Barrett once-fired brass into a 6mm PPC FL size die and then seating with the 6mm PPC seater die, then crimping with the mouth of a 40S&W FL size die. Next to it is a double-shouldered .458/50-BMG.

WTF????

Dr. RIP-n-stein is open for business again!

Macifej,
Eventually you must create a .395-caliber Shark-gilled VLD bullet with rebated boat tail and length and weight and pointiness to exceed 1.000 BC.

The .416 Barrett uses such a conformation but only gets to about 0.9 BC for a .416/395-grain brass VLD bullet at 3250 fps.

If a .395 caliber bullet of something less than 395-grain weight can beat 1.000 BC, and beat 3250 fps, it ought to beat all comers at 1000-yards, in a .395 EHT.

I can do that no problem but what are you gonna load them in? You would need proper dies and barrel to convert your Barret or your upcoming 666. That bullet is gonna be really loooong. I'm running the .666-999 FN's this week if you want some of those pointers done I could probably bang out a small quantity.

.395" x 2.25" x 400 Grain = 1.025 BC @ 3300 FPS

A .395/395-gr VLD might require a 10" TWIST, and that is down the road for a .395EHT.

.666T or bust.

Carry on.

About 10.3:1

Sending you the drawing in a few.

Check it out and edit at will then shelve it for future reference.

May I post your drawing of the latest SHark .395 concept?

It should be a model for all monometal bullets to aspire too.

Snip off the nose and give it a hollowpoint in copper for big game.

Snip off the nose even more and make it an FN solid, of brass or copper.

Leave long and pointy for VLD target work in either brass or copper.

Later, Alligator ...ZZZ ...

Post away Boss!!

It's your bullet I just work here.

No "hand formatting" required this time. SHe's a beauty. Sleeker than a speeding .416 Barrett, and only 10 grains lighter.

May come in a tad lighter with that big-ass boat tail and all those gills......could be 375 Grain. I'll have to get the abacus out to be sure.

ATF has the paperwork for the .666 as of this morning. Should have an answer in a few weeks.

Load data is really simple for these cartridges. I found Rl-25 worked real well as did RL-22. Basically fill the case with RL25and seat the bullet and death crimp it in place. I got max velocities with RL22 as I remember.You don't want any loose powder if you can avoid it and some compression is a good thing here. Sounds scary but really isnt considering your burning over 300grs of powder. For light loads use a case full of H750.
You can fireform the cases by first neck and shoulder anealing .50BMG brass, then use 50grs of bulleseye over corn meal and a soap plug in the case. Bang and out pops a perfectly fireformed case. I make my 12gafh cases this way with almost no split cases and thats almost a .25 expansion. Piece of cake.-Rob

quote:

Originally posted by Robgunbuilder:
Load data is really simple for these cartridges. I found Rl-25 worked real well as did RL-22. Basically fill the case with RL25and seat the bullet and death crimp it in place. I got max velocities with RL22 as I remember.You don't want any loose powder if you can avoid it and some compression is a good thing here. Sounds scary but really isnt considering your burning over 300grs of powder. For light loads use a case full of H750.
You can fireform the cases by first neck and shoulder anealing .50BMG brass, then use 50grs of bulleseye over corn meal and a soap plug in the case. Bang and out pops a perfectly fireformed case. I make my 12gafh cases this way with almost no split cases and thats almost a .25 expansion. Piece of cake.-Rob

Rob,
Thanks for the good poop.

I like best the part about neck&shoulder annealing, 50 grains of Bullseye, corn meal, and soap plug.

Finished case length is supposed to be 3.750" max, IIRC (Macifej's baby). They ought to shorten a little when fireforming to a sharper shoulder (double-radiused ala Weatherby?) and greater neck diameter.
So, maybe trimming them down to 3.800" before blowing out would be about right?

Run em through the sizer die with both sets of taper plugs then fire form them. Then trim them to length.

Yes, there are more ways than one to skin that 'cat.

Speaking of trimming:

A. Case trim die and a file?

Or

B. .666" trimmer pilot for my Forster 50BMG case trimmer?

New Pilot or trim by hand or hack saw or toe nail clippers or Dr. Evil "Laser". Hmmmmm....

I have used a RCBS .50BMG trimmer and made a custom pilot for the .50BMG cutter. You will simply exhaust yourself with a file and trim die. The .50bmg has a whole lot of brass to remove and its tough! I'd use a dremel to cut it back first and save your wrists. Normally I'd chuck the brass in a manual lathe and cut it down. If you want to pay the freight I have a old Southbend Heavy 10 for sale thats perfect for this simple stuff. My price is low too. But again you pay the freight! Its probably not that much in reality. Anyone who wants it PM me.First $500 and its yours with a 240v single phase to 3 phase converter thrown in. BEST WILDCAT CASE TRIMMER EVER made. Inside and outside Neck turns too! Great learning manual lathe!
I anneal my .700RLG brass for example every 3 reloadings to avoid splits. Annealing is easy just hold a case in your fingers and turn till dull red over a propane torch. Once a even color is achieved drop into water. Wahlah!I experimented with case expanding dies and in the end found the fireforming technique directly from .50BMG worked just as well. Its amazing to see those perfectly expanded cases pop out of the action with sharp shoulders. In my designs the shoulder of the .50BMG was foreword of the .700 shoulder by .250 inches. To get the .50BMG case to fire, I squeezed the case shoulder with a vise till it would stick in the chamber. Once it lit off out popped a perfectly headspaced .700RLG. -Rob

Well boyz......I will be trimming the formed cases to length with a Haas VF-2SSYT. Should take about ten minutes to do them all.

Still waiting on the BATF packet.....should be here any day.

I always knew the ATFE were in cahoots with The Devil.

The sound of two hands clapping:

http://ammoguide.com/?catid=686

I really like that 1:10" twist for .666/1200-grain bullets.

Gee, I sure hope Rob does not object.

That gives you enough twist to make a 1200-grain VLD launch at 2200 fps and still be supersonic at over 1000 yards.

Can you make a bullet with BC greater than 1.050"?

Just how high in BC can you go?

Of course the FN solids will be smashing on DG at close range, but some 1000-yard match shooting should not be counted out.

With a standard length (1.5") and weight (1000 grain) bullet .405 BC @ 2500 FPS is about all you're gonna get. There are a couple errors on the posting - the twist should be 1:20 and the primer should be .310 ......

A sub-caliber spitzer loaded into a sabot might be more workable........say the .395" Super RIP-A at about 4000 fps........

Both my .600RLG and My .700RLG has a 1:20 twist. 1000 gr bullets went way better than 2500fps though.-Rob

At your 3300 number the BC bumps up to about .425 - good enough for medium range plinking. Do you remember what the load was that got you to 3300 Rob? I'm not sure that this case is quite as large as the ones you did.

quote:

Originally posted by Macifej:
More on the .666" Teufel

Happy to host the .666 Teufel at AmmoGuide, as well as any real wildcat. The tool to use to submit cartridge data is...
http://ammoguide.com/runcreator.html
...(Just please, no "concept" rounds. At least a reamer/dies should be on order. You have no idea how many "concept" rounds are submitted to us that never amount to anything.)

In fact, I forwarded the .666's AG page to my friends at the Fifty Caliber Institute, another great group of "big bang" folks. (And not to change the subject, but FCI just started a "unique" raffle that some "pound-atta-time" folks may be interested in...
http://fiftycal.org/events.php
...Just think how much powder you could go through with a SEMI-AUTO.)

Mike
http://AmmoGuide.com/

Mike,
Good service, your site. I've got a couple listed there too, and there could be many more by me, though not as many as by jeffeosso.

Macifej,
What happened to the TWIST///Now 1:20"???
Fickle???
You just want to shoot close-range trash at the dump with this or what?

1:15" would be a nice TWIST with which to Shoot The Devil.

quote:

Originally posted by RIP:
Mike,
Good service, your site. I've got a couple listed there too, and there could be many more by me, though not as many as by jeffeosso.

Macifej,
What happened to the TWIST///Now 1:20"???
Fickle???
You just want to shoot close-range trash at the dump with this or what?

1:15" would be a nice TWIST with which to Shoot The Devil.

You can have any twist you want RIP!! If you want a 1:10 you can have it.....

Mike - thanks for the support.....maybe you can bump the primer size up to .310 (CCI #35) on your list....

O.K.
This will be an excellent proof that TWIST EFFECTS ON PRESSURE AND VELOCITY amount to less than 0.5 percent (a factor of +/- 0.005) when going from 7.5" to 15" or from 1:10" to 1:20" TWIST.

Previous artillery tests have shown this to be true.
The .666 TEUFEL will be another artillery test for the record.

My 10" TWIST will handle VLD 1200-grainers at 2200 fps much better than your 1:20" TWIST. Either will be fine for shooting trash at the dump.

Surely Mike won't mind if I post this: If even Macifej can use www.ammoguide.com to "Create a Cartridge" drawing, then even a caveman can do it:

quote:

Originally posted by RIP:
Mike - thanks for the support.....maybe you can bump the primer size up to .310 (CCI #35) on your list....

As I have often said before... "Ooops." Fixed.

Mike

I saw the correction. Says .315" for primer diameter now. Go check it out.
Still says 1:10" for the TWIST.
JUST AS IT SHOULD BE!!!

You'll need that 1:10 twist for the 1.00 BC you're wanting - it'll be about 1600 grains and you'll need the full length BMG action to stuff that ICBM into the pipe!!!

You won't be able to hunt with that as the animals will see it coming inbound about ten seconds after they hear the boom!!

Some properly places holes in the nose and tangent might yield a nice whistling sound too....

On a serious note - there is really no possible combination of shape, weight, velocity, etc that would require more than about a 30 twist. At least nothing that could be loaded into the rifle. The extra length equals extra weight and the velocity decrease kills the BC even if you loaded it through the ass end followed by the bolt.

Mike,
good to see you on AR again.. and more 45/120 nitro loads will be coming

Mac
On twist, just don't bother, let himorder his tooling and see... there is no need for faster twist, but the "wantu" for faster twist will be obeyed by those so aflicked!

I doubt Rip is going to be paying any extra costs for any special tooling for fast twist .666" barrels. We'll see what shakes out.
The previous happy suggestion was 1:16" Twist.
2x stability factor with trash busting bullets might allow just over 1X SF with some fun bullets.
Always better to have more than enough TWIST for anything, than not enough TWIST for some applications.

No extra tooling or costs to make different twists. Everyone can have their own custom twist.

in cut rifling, you are somewhat correct
in button rifling, only a limited spectrum of twist can be cut, but ONLY one should be cut, per button

Huh?...........

Macifej,
Harry McGowen was going to require an extra $500 to buy the tooling if I wanted another twist in addition to the 1:12" twist chosen for the .395 barrels.

There is additional tooling for each twist in his button-rifling machinery.

You tell us: What rifling technique can produce whatever twist you want with no extra tooling charges per twist rate? Is this a new CNC cut-rifling technique?

Single point cut rifling on digital equipment. The twist rate is entered into the code with a few keystrokes - there is no changing of tooling. If you want a 10.375:1 twist - no problem. Fortunately, the barrels aren't very large so this equipment is available. For larger diameter or longer length blanks the digital equipment is pretty scarce.

Anyway - I have three sources for the barrels plus the usual suspects for button rifling on cam driven machines.

O.K.
I am convinced.
1:20" should be fine.
I would not be able to withstand the recoil of the bullet weight I was thinking of.
.666/1300-grain boat tail spitzer match brass bullets by S&H should do fine in a 1:20", according to Macifej's calculations.

I couldn't handle anything heavier.