The Garand is capable of more velocity. It just depends on the load. The big difference is the 8 round clip verses the magazine. Garands can be chambered in 308/7.62 but typically are not. The M1A's have a simplified gas operating system over the M1 Garand. As per velocity differences; some, but not a lot. Since the U.S. took the M1A over the Garand starting in the 1950's it appears that velocity isn't a real big issue. Ammo commonality with the other NATO nations appears to be a driving factor.

kwg

For liberals and anarchists, power and control is opium, selling envy is the fastest and easiest way to get it. TRR. American conservative. Never trust a white liberal. Malcom X Current NRA member.