Page "Mauser 1918 T-Gewehr" Paragraph 3

The armour piercing hardened steel cored 13. 2 x 92mm (. 525-inch ) semi-rimmed cartridge, often simply called " 13 mm ", was originally planned for a new, heavy Maxim MG. 18 water-cooled machine gun, the Tank und Flieger ( TuF ) meaning for use against " tank and aircraft ", which was under development and to be fielded in 1919.

The rounds weighed 51. 5 g ( 795 gn ) with an initial velocity of.