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Accuracy with a .458 Win Mag?

 
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  #1  
Old 06-15-2006, 09:48 AM
jml jml is offline
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Accuracy with a .458 Win Mag?

What sort of groups have you guys with a .458 been able to shoot? I'm curious, because I recently had one put together and I can't seem to get the damn thing to shoot better than about 1 3/4" at 100yds. Thanks.
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Old 06-15-2006, 10:06 AM
POP POP is offline
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Re: Accuracy with a .458 Win Mag?

With 350 Barnes X--not TSX-- and 748 I get 2500 fps and well under an inch at 100 yds from my Ruger #1.
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Old 06-15-2006, 04:29 PM
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Re: Accuracy with a .458 Win Mag?

I built one long ago out of a Mauser action, for a bear hunt trip, 350grn round nose Hornaday's with 4198 powder. I have shot groups that all three shots will touch at 100yds. It has a Shaw bbl, 24" the whole gun weighs 7# no brake! No recoil pad! OUCH! The only thing this gun has killed is a "Snaggle Toothed Beaver" and several shoulders, oh and a bloody nose on a not so good friend...hehe.

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Old 06-15-2006, 06:28 PM
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Re: Accuracy with a .458 Win Mag?

I had a Savage muzzleloader. I wanted to upgrade the barrel, and I bought a Krieger 505 gibbs to replace it. Since I had ZERO experience in gunsmithing I bought a barrel from midway, a 458 barrel from A&B with a 99 ( straight 1.250) contour.
I cut it to length, I cut the barrel taper, breech and crown. A $70 investment so that I would not screw up a 350 barrel :-)

That worked out great so now I have a cheap 458 barrel sitting around. I decided that it would be worth it to buy a Savage action and attach the barrel to see if it would shoot.

Some loads are better, and some are worse, but here is a 3 shot group @ 100 yards with an A&B muzzleloader.

edge.

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Old 06-15-2006, 08:26 PM
jml jml is offline
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Re: Accuracy with a .458 Win Mag?

Hey, thanks for the info everyone. POP, do you remember how many grains of 748 worked? And are you all using Fed 215 primers?
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Old 06-19-2006, 04:15 PM
POP POP is offline
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Re: Accuracy with a .458 Win Mag?

80 gr of 748 215m federal match caps
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Old 06-21-2006, 08:57 AM
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Re: Accuracy with a .458 Win Mag?

JML...I get 1.62 using Hornady 350 grain bullets with a dose of IMR-4320 powder @ 71 grains. I shoot them at a velocity of 2140fps.

I also use the Barnes 450 X bullet and get groups of 1.78 to 2.35 inches. at 100 yards from the bench. These are shot at 2250fps using IMR-4320 powder.

I get 1.40 from the Hornady 500 grain FMJ using same powder again at 76 grains at a velocity of 2120fps.

At 70 grains of 4320 same 500 grain bullet, I get 1960fps and groups of 1.70 inches at 100 yards from the bench. [img]/ubbthreads/images/graemlins/wink.gif[/img]
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