stupid question regarding .458 win mag

03 April 2007, 21:44

From what cartridge is the .458 win mag made? I know (I think) that it is the same length as 30-06. So the question is can any riffle that is chambered for 30-06 be chambered to .458 win mag or is there something else to it.

03 April 2007, 21:54

congomike

I can't remember which came first, but the .458 is the same case as the 300 Win. Mag, the 264 Win Mag, 7mm Rem Mag, 338 Win Mag, etc. It is originally based on the 300 H&H/375 H&H case, that is shortened so that the overall length of the cartridge is similar to the 30-06. You can rebarrel an "06" action to .458, but you will have to have the bolt face opened up and some work done on the magazine and or feed rails since the .458 is larger in diameter. Hope this helps.

03 April 2007, 21:58

Michael Robinson

The .458 Win. Mag. is based on the .375 H&H Mag. case. Not the .30-06. The H&H Mag. case is the basis for all of the "short magnums" of the '50s and '60s, including the .458 Win.

Generally speaking, the H&H Mag. based rounds are belted (unlike the '06), are "fatter" than the '06 and have a bigger head diameter.

Rifles chambered for '06 based cartridges need a bit of work to accommodate those based on the H&H Mag. case, even if the cartridge overall length is the same or close to that of the '06.

04 April 2007, 01:13

DanEP

quote:
Originally posted by congomike:
I can't remember which came first, but the .458 is the same case as the 300 Win. Mag, the 264 Win Mag, 7mm Rem Mag, 338 Win Mag, etc. It is originally based on the 300 H&H/375 H&H case, that is shortened so that the overall length of the cartridge is similar to the 30-06. You can rebarrel an "06" action to .458, but you will have to have the bolt face opened up and some work done on the magazine and or feed rails since the .458 is larger in diameter. Hope this helps.

The .300 win is a different animal than the .338 win and .264 win. The 7mm rem mag was based on the same case as the .264 and .338, but was introduced by rem later. Idea was to take the same H&H base that Weatherby had been popularizing, and make cartridges that would fit in a "standard" (.30-06 length) action.

These were dubbed Westerner (.264 win), Alaskan (.338 win), and African (.458 win)...

Dan

04 April 2007, 01:42

jeffeosso

as for length , YES

as for width, you'll need to pay someone to change that

as for bolt face - MAYBE, but probably

jeffe

opinions vary band of bubbas and STC hunting Club

Information on Ammoguide about
the416AR, 458AR, 470AR, 500AR
What is an AR round? Case Drawings 416-458-470AR and 500AR.
476AR,
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