ORIGINAL: younggun243
You want to be careful,though. The M-1 Garand only took a certain type of .30-06. A 50 grain, I believe. Anything else goes in there, and you're running a risk.
Assuming it to be true that only certain bullets can be used, I guarantee it isn't a 50 grain. They don't even make a 50 grain for the 06. It would have to be at least a 150 grain. Assuming the Garand is in good condition, I would think that it should handlecommercial loads, assuming proper overall length of the cartridge. I've read that the bullet should be under 173 grains, so 125, 150, 165 and 168 grain bullets should work well.
I wouldn't be surprised if M-1 Carbines were the same.
I've never seen anything but110 grain FMJand HPloadings for the M-1 Carbine. Either should work fine.