Swampman
Old Fart
I'm not defending it as a best practice, but I've used CCI small pistol magnum primers to load M1 Carbine ammo in the past.
I got them mostly for loading .357 Sig, which has 40,000 psi max chamber pressure, the exact same as the .30 Carbine.
I got them mostly for loading .357 Sig, which has 40,000 psi max chamber pressure, the exact same as the .30 Carbine.