B17 Fortress under attack - Gun camera film

The MK 108 Maschinenkanone 30 mm caliber autocannon manufactured by Rheinmetall-Borsig. A requirement for a heavy aircraft weapon for use against the Allied heavy bombers. Requiring on average just four hits with high-explosive ammunition to bring down a B-17 heavy bomber and a single hit to down a fighter. There were two main types of ammunition for the MK 108 to use, a 30 mm high-explosive self-destroying tracer (“M-Shell“ or “Mine-Shell“) and a 30 mm incendiary shell. The first type was designed to c