 The British also sought to replace the Lee–Enfield rifle with the Pattern 1913 Enfield rifle, based on the Mauser M98 bolt action design.Although the round had better ballistics, troop trials in 1913 revealed problems including excessive recoil, muzzle flash, barrel wear and overheating.Attempts were made to find a cooler-burning propellant, but further trials were halted in 1914 by the onset of World War I.