From what I've seen of gun cam footage on T.V. and read, AHII's .50s are about right, some would say even a little TOO powerful, but I think they are where they should be.
Hah, you want to try a game where the .50s SUUUUUUUUUUUUUUUUCK, get IL2. A 2 second burst from the P-51B won't bring down a freakin' biplane in that game, and your whole clip often won't bring down a 190-and the same is true for the dang Ki-27
!...But the 109s just fall apart from even 4 .50s...inconsistent and messed up damage value all around in that game.