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30-338/308 Norma Mag
grumpygy
Member Posts: 48,464 ✭✭✭
Are they close enough in size that they could be shot out of the same rifle. Have one listed on the Auction side.
Comments
Since the .30-338 Win. Mag. is a wildcat, there are no definitive dimensions for that cartridge. It's possible that your two cartridges might now be perfectly compatible as most observations state.
I think the safest method would be to cast both chambers and measure. The .308 Norma Mag. is 0.060" longer than the .338 Win. Mag. Since both headspace on the belt initially at least, the fireformed cases will grow that 0.060" on the first firing.
Best.
Just did some reading and it seems that they are now calling the 30-338 win Mag. They did not do that a few years ago. Know I need to look in my reloading books cause they were listed as 30-338 Norma.
Also found that by fire forming I can use the 30-338 in my 308 Norma. So the brass will be much cheaper.
http://www.norma-usa.com/index.php/products/ammo/aph/19-amph/104-308-norma-magnum
I see no mention of .30-338 Norma in the Norma product lineup.
There is some internet speculation that it was an early term for what is now known as the .300 Norma Magnum, a bigger round based on the .338 Norma which is a shortened .338 Lapua.
Ken Waters said that if you neck .338 Win Mag down in a .308 Norma Mag die, it comes out shorter. One source says the case body taper is different, too.
As an aside: I have a Remington 1903 that, many years ago, I had rebarreled to .358 Norma mag. I have made brass for it from .338 Win. Mag. cases and they are indeed short. I don't remember, offhand, how much so I'll have to check that, too
Actually the 30-338 is a Norma round. They are close in size. Not the .30-338 win Mag which is different.
Just did some reading and it seems that they are now calling the 30-338 win Mag. They did not do that a few years ago. Know I need to look in my reloading books cause they were listed as 30-338 Norma.
Also found that by fire forming I can use the 30-338 in my 308 Norma. So the brass will be much cheaper.
Norma does not, or never did have a 338 Magnum, to neck down to 30 caliber, so it has to be the 338 Win Mag. If you are looking for brass for the 308 Norma, I am sure it can be formed and trimmed from the 300 Winchester Magnum.
https://en.wikipedia.org/wiki/.338_Norma_Magnum
And it HAS been necked to .30 caliber.
https://en.wikipedia.org/wiki/.300_Norma_Magnum
They are not what the OP is talking about, but they do exist.