70和80年代生产的步兵战车上普遍配备了25毫米或30毫米口径的自动炮。如美国著名的M2/M3“布雷德利”步兵战车上就配备了M242式25毫米链式自动炮;英国的“狐”式侦察车配备的是L21“拉登”30毫米自动炮。这些步兵战车的用户普遍希望提高其车载武器的威力,以便有效地对付轻型装甲车辆和直升机。而大家公认的提高火炮威力的最为有效的途径之一是改进弹药,因此,国外一些厂商开始在这一领域展开了激烈角逐。 Infantry fighting vehicles produced in the 1970s and 1980s were commonly equipped with 25 mm or 30 mm automatic guns. Such as the famous American M2 / M3 “Bradley” infantry fighting vehicles are equipped with M242 25 mm chain automatic gun; British “fox” scout truck equipped with L21 “bin Laden” 30 mm automatic gun. Users of these infantry fighting vehicles generally expect to increase the power of their vehicle-mounted weapons in order to deal effectively with light armored vehicles and helicopters. While acknowledging that one of the most effective ways to improve the power of artillery is to improve ammunition, some foreign manufacturers have started fierce competition in this field.