mount. The L/55 is 1.32 metres (4.3 ft) longer, generating increased muzzlevelocity for rounds fired through it. As the L/55 retains the same barrel geometry
from 90 to 129 grains (5.8 to 8.4 g), its muzzlevelocity varies from 2,500 ft/s (760 m/s) with 129- and 130-grain (8.4 g) bullets to 2,900 ft/s (880 m/s)