砲口初速
Factory ammunition is widely available from all major manufacturers, generally with bullets weighing 34, 35, 45, or 46 grains (2.2, 2.3, 2.9, or 3.0 g), with bullets invariably either hollow point or soft point. Muzzle velocity typically is in the range, and muzzle energy is just over 700 ft·lbf (950 J) for factory ammo fired from a rifle. Velocities and energies are less when Hornet ammunition is fired from short-barreled firearms.