6.5×57mm Mauser
The 6.5×57mm Mauser (designated as the 6,5 × 57 by the C.I.P.) is a smokeless powder rimless bottlenecked centerfire rifle cartridge developed by Paul Mauser and introduced in 1893–94. == Overview == The 6.5×57mm Mauser was designed and introduced by Mauser in either 1893 or 1894 for use as a sporting cartridge, created by necking down the 7×57mm Mauser.