bullet technology

How Fast Does The 40 Millimeter Bullet Travel? Bullet mass/type Velocity Energy 7.45 g (115 gr) Cor-Bon Glaser1,400 ft/s (430 m/s) 500 ft⋅lbf (680 J) 10.04 g (155 gr) Federal HST 1,160 ft/s (350 m/s) 463 ft⋅lbf (628 J) 8.74 g (135 gr) Underwood JHP 1,400 ft/s (430 m/s) 588 ft⋅lbf (797 J) 12.95 g