Of course, the Bofors wasn’t just mounted on warships, but on a variety of ground-based weapons platforms, both stationary gun mounts and mobile (tanks ... credits the 20mm cannon with 617.5 ...
This is one of the 20mm Cannon Shells fired by Mosquito II DD612, flown by my father (Group Captain R G Slade) on the night of 22-8-1942. My father and his navigator shot down a Dornier 217 E-4 U5 ...