Ammunition
It fired a 120 kg (260 lb) 21 cm K Gr 38 HE shell. It used three individual bags of propellant in the cartridge case; they were not combined. The light load (Kleine Ladung) weighed 34 kilograms (75 lb) and propelled the shell at 680 metres per second (2,200 ft/s). The medium load (Mittlere Ladung) weighed 42.2 kilograms (93 lb) and gave a muzzle velocity of 796 metres per second (2,610 ft/s). The big load (Grosse Ladung) weighed 60.2 kilograms (133 lb) and yielded a muzzle velocity of 905 metres per second (2,970 ft/s).
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