A two-piece 11mm cartridge (left) compared to a more modern 7.65×53mm Mauser
The 11mm Mauser (also known as the 11×60mmR Mauser or .43 Mauser) is a black-powder cartridge developed for the Mauser Model 1871 rifle, and used later in the 71/84 variant. It is no longer in production, however it is available from custom loaders and handloading can be done.