20mm bullet rounds

20mm 250 active ammo ammunition armor armour armoured auto barrel big bullet bullets calibre cannon case casing charge defeat depleted drive electrically f15 f16 fighter fire firepower flight gas gatling gun gunpowder hydraulic hydraulically inbuilt jet launch life live load loading machinegun metal metallic minigun munitions penetrate penetration penetrator pierce piercing power powered primed primer propellant rate rof round rounds silver size smokeless stopping tank tanks uranium vehicle vehicles vulcan war warplane