RAM there is a recorded kill at 1500-1600yds.  Made with .50s
M3s instead of the M2s that we have, which had a higher rate of fire.  But the same kind of ammunition.
For the record, I've always felt the .50s on the fighters were on the weak side, possibly as a gameplay issue to keep you luftwaffles from screaming too loudly.  I mean, they used to blow trains and boilers on smaller ships with .50s.  Trains and ships are ALOT harder targets than airframes mate.
[This message has been edited by CavemanJ (edited 08-16-2000).]