Rukan

Rjukan again. Live firing. Note the machinegun strapped to the barrel, much more economical to practise with than using 40mm rounds. Incidentally, this technique was "re-discovered" in the Norwegian Air Force in the late 80s, then using L-70 guns with MG-3s (M-42). The inventive officer was given a cash price and a diploma for the idea! History repeats itself....