 Their heavy round-nosed bullets had low muzzle velocities and suffered compared to the 7×57mm rounds fired from the Mauser Model 1895.The high-velocity 7×57mm had a flatter trajectory and longer range that excelled on the open country of the South African plains.In 1910, work began on a long-range replacement cartridge, which emerged in 1912 as the .276 Enfield.