Developed in 1891 by Sweden and Norway for use in their new service rifles, the 6.5x55mm round is a rimless, bottlenecked rifle round. Sporting lower recoil and smaller diameter, the 6.5x55mm cartridge has established itself as being more successful than other 1st gen smokeless powder military rounds of similar caliber. Other names/designations for the 6.5x55mm are: 6.5x55mm Swedish, 6,5x55 SE, 6.5x55mm Swedish Mauser, 6.5x55mm Mauser or 6.5x55mm Krag.