O.K. M1 Carbine as issued are 30 carbine.

The M1 Garand is 30-06. If stamped it will say 30 cal.

150 grain is M2 Ball Ammo which is the standard military issue ammo for the M1 Garand.

The M1 Garand will handle everything up to about 190 grain ammo.

For match grade ammo you will see it loaded with 168 SMK's most likely, which is a lot better for shooting off the 600 yard line over the M2 Ball. IMO

If you ever get a chance to shoot a John C. Garand Match you will be shooting a rack grade M! and everyone will be issued M2 Ball ammo.

I know this strays form the original posting but seem relevant.

They are a lot of fun.

For more information go to: www.odcmp.com