Thin-walled 30 Carbine cartridge case

[Kragman71]

Hello,
Does anyone know of a Make of cartridge case that will accept more powder then the others?It would have thinner walls.
I know that,years back,one GI manufacturer of 30 Cal Carbine rounds made  such cases,but I can't remember which one that it was.
Thanks,
Frank

[John Traveler]

Kragman,

It's been many years since I bothered to weigh and segregate .30  M1 Carbine cases, but I do recall that WRA (Winchester Repeating Arms) cases had more capacity than LC (Lake City).

The commercial Winchester cases definitely have more capacity than the GI.

The only question is, in a case that small, does 1 or 1 1/2 grain capacity really make any difference? I regard the M1 Carbine as strictly a plinker and utility weapon.  It's not accurate enough to worry about developing accuracy loads.

HTH
John

[John Traveler]

Oh, yes:

Korean War era STEEL .30 M1 Carbine cases have more capacity than the brass ones.

I've tried reloading them, but they are hard on sizing dies, and repriming is usually more difficult too.

Generally they are not worth the trouble because they rust easily after the protective finish (zinc chromate) wears off.

John