Hi Ralph,
>I know that it was was used by the FW 190 "Sturmbocks" and that 3 rounds were enough to bring down a heavy bomber That seems too hard for me to believe
Priller's "J.G. 26" mentions that there was one case in which the MK 108 jammed after firing a single shot only, and the targeted bomber blew up anyway.
However, that was a very lucky hit. The figures from a German report indicate that you get a 50% kill chance against a heavy bomber from the following number of hits:
MG 151/20 (20 mm): 18 hits
MK 103/108 (30 mm): 4 hits
MK 412 (55 mm): 1 hit
MK 214 (50 mm): 1 hit
For a 95% kill chance, the follwing numbers are required:
MG 151/20 (20 mm): 25 hits
MK 103/108 (30 mm): 7.5 hits
MK 412 (55 mm): 2.8 hits
MK 214 (50 mm): 2.9 hits
Regards,
Henning (HoHun)