Quote Originally Posted by fm2176 View Post
Oh, and before someone catches onto the "intermediate full power cartridge" I was talking about, bear in mind that 7.62x51 NATO was originally designed by the US as an intermediate cartridge to be adopted over the .280 British.
Good point. In terms of development history, the 7.62x51mm cartridge is actually analogous to the Soviet 7.62x39mm cartridge: A reduced-power round that was designed to supercede a larger full-power round (.30-06 for the US, 7.62X54mmR for the Soviets) for use in fully automatic rifles. So whether it's a "full power" or "intermediate power" round depends on whether you define such things by muzzle energy, or developmental origin.