458 downsized to 454 Colt?

23 March 2002, 17:25

Hi
Anyone resized 458 rifle bullets to 454, and used them in either a 45 Colt or 454 Casull?

Looking at some very sexy 405 grain LBT's, and wondering how they might work...
gs

24 March 2002, 09:44

<Mats>

quote:
Originally posted by Socrates:
Hi
Anyone resized 458 rifle bullets to 454, and used them in either a 45 Colt or 454 Casull?
Looking at some very sexy 405 grain LBT's, and wondering how they might work...
gs

I've tried calibrating .458's down to .452", but they get a bit messed up in the process. Barrel leading increases and accuracy ain't enough for me. VERY low velocities too in Ruger's/FA's since not much room is left for the powder although a buddy swears by his 395 gr (actual) in his custom Dan Wesson.

I stick with ~300 gr pills for my application (Silhouette), although a 260 at impressive velocities works just fine with a lot less recoil.

-- Mats

24 March 2002, 02:10

<MontanaMarine>

It's been done.

Named the .458 Behemoth. A .458 bore revolver using .458 WinMag brass shortened to 1.4 and 1.6 inches.

Ross Seyfried did this if I recall correctly.

24 March 2002, 02:26

<eldeguello>

Sizing a .458 down to .454 could be done, but one would have to do it in at least two steps, say .456 then .454 to avoid excessive deformation.

24 March 2002, 02:57

<MePlat>

I have sized down .458 bullets of 525 gr for the 454 Casull Encore single shot pistol with very good results. Velocity is around 1330 fps. Sized them in one step. With the Encore and its long throat the bullets can be seated out thus giving more power. Something that could not be done in a revolver. The same bullet flat pointed in a lathe with a .360" diameter meplat weighs 510 gr. This is getting on up in the power scale considering the size of the cartridge and the gun.