7.92×57mm Mauser. The 7.92×57mm Mauser (designated as the 8mm Mauser or 8×57mm by the SAAMI [2] and 8 × 57 IS by the C.I.P. [3]) is a rimless bottlenecked rifle cartridge. The 7.92×57mm Mauser cartridge was adopted by the German Empire in 1903–1905, and was the German service cartridge in both World Wars.
The 7.92×33mm Kurz (designated as the 7.92 x 33 kurz by the C.I.P.) [5][6][7][8][9] is a rimless bottlenecked intermediate rifle cartridge (German: Mittelpatrone) developed in Nazi Germany prior to and during World War II, specifically intended for development of …