In production during 1930s. Why didn't Germany use a variant of this weapon to arm Panzer III, Panzer IV or StuG III? It compares nicely to early T-34 and Sherman tank main guns. HE payload is impressive for a shell only 75mm in size. USA. 75mm Gun M2. Sherman Tank. HE round. 625 m/s velocity. .77kg HE filler. Soviet Union. 76.2mm F-34 gun. T-34 tank. HE round. 680 m/s velocity. .73kg HE filler. …..Original cannon version 612 m/s velocity. Krupp. 7.5cm/34 FK38. …..Artillery piece produced for export to Brazil during 1930s. …..German navy used similar weapon on small vessels. HE round. 605 m/s velocity. 1.06kg HE filler.