hitting what youre trying to hit helps alot
it's like the scene in Band of Brothers where the guy from another unit is next to Garneare(sp?) in the trench and fires round after round and this nazi, missing every shot with an M1 Garand mind you, now thats a real knock down cartridge!
Garneare presents his Thompson and lets a burst go into the nazis back and down he goes
is anyone going to argue that 30-06 is less powerful than .45 ACP? No
did .45ACP work in that situation? Yes, because he hit the bastard!

spend all this money people are proposing for a newer better whiz bang round on freakin training and everything will be good