
5.56mm is the ammunition of the infantrymen who have used it for the combat at short distance since the war in Vietnam. Its current range for battlefield use is approximately 440 yards (400 m) and its performance improved with the introduction of the 5.56mm NATO whose SS 109 bullet made it possible to engage up to 650 yards (600 m). For shooting up to 1,100 yards (1,000 m), sniper rifles and machine-guns in 7.62mm NATO are used….