Loud sharp clank of loading bullet into ammunition magazine
Very big cannon shooting with debris
Big canon shooting three times in a valley
Knife cut, swoosh, serrated
Loading or cocking a gun or air pistol.
Loading or cocking a gun or revolver.
Many rapid thick fast whooshes.
Short medium pitched multiple zaps
Pump action shotgun cocked 3 times
Rapid firing of a machine gun or automatic gun.