I finally put some more lead down range with the 500 today. I'd loaded up some 470 gr cast bullets over 21, 24.5 and 28 gr of Unique. 3 shot groups at 50 yds were a tad over 1", and two of the groups had 2 of the shots touching. The temporary stock isn't bedded, so I'm sure that will make a big difference in groups. Recoil and muzzle blast are quite mild, and you get a nice resounding whack from the meplat of the cast bullet hitting the target.

It really does seem like shooting a vastly upsized 22rf.

I forgot to mention it does a fair job of kicking up snow and ice behind the target, despite it's mild mannered nature

Paul,

In the last 460 I had 28 grains of Hi Score 700X did 1300 f/s with 400 grain bullets.

I reckon you must be down around 800 or 900 f/s

Mike

Mike

I cronoed the 21 gr load @ ~1 100 fps the first time I tried it, and I'm guessing the 28 gr load would be around 1150. They're definately going faster then 800-900 fps.

Paul,

I was figuring on the low speed because unique would be sloer than 700 X. Perhaps the cast bullets at these very low pressures get up more speed than jacketed. I was using 400 grain Speer flat nose.

There is something about shooting these bigger guns, say 375 H&H and up, with very reduced loads that you just can't explain to someone.

Mike

Mike,

Cast bullets will shoot faster and at lower pressure, than jacketed bullets of the same weight, with same powder charge.

Hog Killer

quote:

Originally posted by Mike375:
Paul,

I was figuring on the low speed because unique would be sloer than 700 X. Perhaps the cast bullets at these very low pressures get up more speed than jacketed. I was using 400 grain Speer flat nose.

There is something about shooting these bigger guns, say 375 H&H and up, with very reduced loads that you just can't explain to someone.

Mike

It's the grin factor It was actually the mention of the blue dot loads on the reloading forum that got me playing with the .308, which lead me to pulling the 500 out of the safe. Now I'm motivated to finish the metal and stock work on the 500.

Paul,

I don't know diddly about these reduced loads in large cases, so forgive me if this is a stoopid question....do you have to use a filler?

What do you think would work in 470 Mbogo with 500gr cast bullets (paper patched)?

Cheers,
Canuck

Chris,

No need for fillers. The pistol powders ignite consistantly even with alot of air space in the case. As an example, I use 14 gr of Unique under a 200 gr cast bullet in my 350 Rigby. The case is thus 1/3 full. For a 10 shot string, I had an average velocity of 1420 fps, and an extreme spread of 20 fps.

The three powders I'd trie for you M-bogo would be Unique, Blue dot and 2400. You should be able to find data for the 460 Weatherby to get you on your way. Needless to say a double charge could ruin your day.

I think you'd have better results if you looked at a lighter bullet, especially one with a larger meplat, so it is shorter. There are alot of cast bullets for the 475 linebaugh and 480 ruger revolvers that would work well. I'm not sure if I can mail you cast bullets w/o being considered a threat to either of our countries, but if so, I have several molds I use for my 480 Ruger, that would work great in your M-bogo. Lee make's a good 400 gr bullet mold, and it is cheap.

You can load your M-bogo to the levels of the "mighty" 475 linebaugh, yet it is a plinker load out of the rifle.

XMP5744 (Accurate Arms) is a very good powder for reduced loads in big cases, also doesn't require any filler. I've used it in 375H&H, 416Rgby, 458Lott, and will probably use it in 510Wells if I ever finish that project.

Well it's intersting to see OL Mike 375 come out of the closet. Those Piss poor weatherby's too much for you Mikey? Boo Hoo! I feel for you!
Let's see some pictures of your guns Mike! Cold day in Hell huh!-Rob

quote:

Originally posted by Paul H:
No need for fillers. The pistol powders ignite consistantly even with alot of air space in the case. As an example, I use 14 gr of Unique under a 200 gr cast bullet in my 350 Rigby. The case is thus 1/3 full. For a 10 shot string, I had an average velocity of 1420 fps, and an extreme spread of 20 fps.

The three powders I'd trie for you M-bogo would be Unique, Blue dot and 2400. You should be able to find data for the 460 Weatherby to get you on your way. Needless to say a double charge could ruin your day.

I think you'd have better results if you looked at a lighter bullet, especially one with a larger meplat, so it is shorter. You can load your M-bogo to the levels of the "mighty" 475 linebaugh, yet it is a plinker load out of the rifle.

Thanks Paul. I'll have to give it a whirl, just for kicks and giggles.

I have some 500gr cast bullets that Dave E made up for me that I'll give a try. Any suggestions where to look for 460 Weatherby reduced loads? My manuals don't have anything.

quote:

I'm not sure if I can mail you cast bullets w/o being considered a threat to either of our countries, but if so, I have several molds I use for my 480 Ruger, that would work great in your M-bogo.

Sending bullets through the mail hasn't been a problem. I buy some cast bullets from the US for my 45/70 (JB Youngs Crater bullets), and haven't had a problem. You just call them "Cast Lead Slugs" instead of bullets and customs doesn't even look twice. The restrictions are imposed by the US and are only supposed to apply to commercial exportations exceeding $100 USD. So mailing a few bullets is 100% legal regardless.

Thanks again, eh!

Cheers,
Canuck

Chris,

PM me your address, and I send some bullets your way when I get a chance to cast some more. I have a 400 gr plain base, 400 gr gas check, and a 460 gr gas check mold, well, also a 310 gr, but I think it might bee too light/short.

I'll have to dig up my 460 articles, and look try and find my Lyman cast bullet handbook.

The real question is, what level loads are you looking for? If you're looking for 480-475 pistol level loads, then I think you'd be ok working up to about 25 grs of unique, based on my 500 J testing, and that should get you in the 1100 fps range. Then again, that is without any published data, so use it at your own risk. My 500J with 28 gr Unique under a 470 gr cast is still operating at low to mid range pressures based on the case appearance, but considering how the pressure rises quickly with fast powders, I don't have any plans to go any higher with Unique. I'll switch to blue dot for ~1500 fps loads.

My main concern is that the relatively long 500 gr bullet won't stabalize at those mild speeds, hence the recomendation for the shorter lighter bullets. I'd think that if you went to a slightly slower pistol powder like 2400 or blue dot, then you could get up around 1500 fps. But I'll need a chrony to verify that theory with my 500J.

Thanks Paul. PM is on its way.

The 400 grain slugs would probably work pretty well. You are correct that the 500gr bullets are fairly long...obviously not as long as a 458 500gr'er, but longish.

This sounds like a hoot. The only hazard will be the restraint necessary to not "pull a Saeed" at the range! I can see it..."Oh, it hardly kicks at all. Watch me shoot one, then you can try it out.".

Cheers,
Chris

I've been thinking about the Saeed trick with my 500 Jeffrey Especially as I have some 670 gr 50 bmg milsurp bullets loaded over 100 gr of RL 15.

Canuck, Paul,
You should see me shooting my 45/70 handirifle...

boom!... 2" muzzle flip (harry says it looks like i am shooting a chipmonk 22)....

had it to someone else... BOOOM@@@ 2 FEET....

it only weighs about 6.5# and is loaded right.. but i know what to expect with it....

500 jeffe-ry is the same way... 6-8 lift... 2-2.5 feet

jeffe

Jeffe,

It helps when you're about the size of Christer and N'gagi! I saw a pic of you and using Dave E. as a reference I can confidently say that you are one large dude!

Actually, the 470 Mbogo doesn't knock me around much either. I can usually suck people in to trying it just by shooting it. It will be more fun with reduced loads though!

Cheers,
Canuck

quote:

Canuck

Hey guy...


Pm me your address and i will be happy to send you some 500 and 600 grain jacketed slug for you to try out in your 45/70

there a bit on the long side but there my flat nose 10 deg taper bullet's .

If you just keep the 600 grain's to around 1000 FPS thay make a really nice plinker/deer bullet



PA Bullet's

quote:

Originally posted by Canuck:
Jeffe,

It helps when you're about the size of Christer and N'gagi! I saw a pic of you and using Dave E. as a reference I can confidently say that you are one large dude!
Cheers,
Canuck

Chris,
I was hunched over and downhill!!!

jeffe