7.65 X 22 Mm Parabellum
The 7.65×21mm Parabellum (also known as .30 Luger and 7.65mm Luger) is a pistol cartridge that was introduced in 1898 by German arms manufacturer Deutsche Waffen und Munitionsfabriken (DWM) for their new Pistol Parabellum. The primary designers were firearms designers Georg Luger and Hugo Borchardt, who developed the round from the earlier 7.65×25mm Borchardt while working at DWM.
Read more about 7.65 X 22 Mm Parabellum: History, Cartridge Dimensions, Usage, Synonyms