@ Dkraver
Fair point about recoil, medical considerations etc. etc. Still, I prefer overkill to underkill, so I'd rather put the enemy down for good with a couple of 7.62 rounds than wound him with 5.56. I read about the AMW Cadre in the Falklands, equipped with Armalites, and they said that they were putting about three rounds into the Argies that were holding their objective, and they were either just winding them or putting them on their arses for a bit, since they were wearing tons of layers. Of course, a 5.56mm to the head will still drop you, so I guess it's down to personal preference, experience or bias.