The 9.3 x 64 Brenneke (also unofficially known as the 9.3 x 64) is a rimless bottlenecke centerfire cartridge developed for big game hunting. As is customary in European cartridges the 9.3 denotes the 9.3 mm bullet calibre and the 64 denotes the 64 mm case length. The 9.3 x 64 Brenneke can easily be chambered in standard sized Mauser 98 bolt action rifles.