Bug report:
BK 3,7 cannon on Bf 110 G-2/R1 is not shooting straight ahead but rather a few degrees downwards. This is wrong, here's a capture from Bf 110 G-2 manual:
(Whole manual can be found here:
Bf 110 G-2/R1 Flugzeug-Handbuch)
By the way, this error already appeared back when Bf 110 G-2 was introduced into the sim, but was fixed in the next patches.