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-   -   .338-08 pressures compared to .308 (https://armslocker.com/showthread.php?t=36416)

Coyote 03-18-2007 03:34 PM

.338-08 pressures compared to .308
 
The more I read about the .338-08 the more I want to build up a nice carbine chambered for it. I suppose since it is a wildcat I'm going to have to handload anyway but I'd like to know how drastically the wider case mouth effects chamber pressure compared to the .308.

Much appreciated.

BigEd63 03-18-2007 04:47 PM

Whatever happened with the .338-Federal round?

I thought it was about the same thing??

Coyote 03-18-2007 07:25 PM

It is but as I understand it almost nothing is chambered for it. Besides, I really want to build something up for it, I have something specific in mind.

BIGBORE 03-18-2007 09:48 PM

[QUOTE=Coyote]The more I read about the .338-08 the more I want to build up a nice carbine chambered for it. I suppose since it is a wildcat I'm going to have to handload anyway but I'd like to know how drastically the wider case mouth effects chamber pressure compared to the .308.

Much appreciated.[/QUOTE]

Assuming optimal powders being used in both cases, you should be able to get 10% more muzzle energy in the 338/08 (338 Fed) at the same pressure level. However, since you can use much heavier bullets with the 338/08 (up to 250gr), you can get much more power. It should make you an excellent carbine for all non-dangerous North American big game. :)
Best regards,
BIGBORE

Aslan 03-25-2007 12:35 AM

I've been talking about building one of these for about 10 years...ever sincve a friend built a 338-06.

I figured a 358 necked down to .338 would be a nice bear / elk gun. short action, be easy handling and would pack a good wallop.

brass hammer 03-26-2007 12:05 AM

'excuse-me' ,,,gang! although, minus the speed, the 45-70 'kilt' ALL NON-DANGEROUS/dangerous ,,,,VARMINTS!!!.

[you 'want' to neck-up?,,,,HA!]

neolithic hunter 03-26-2007 12:53 PM

no brass if he uses 358 win brass , its neck down. if he is uses 308 win brass its neck up. or have i been incorrectly necking down 378 weatherby brass to 30-378, meaning i need to neck it up to 30 cal. i'm confused now brass. :cool:


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