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220 Swift Ammo

The .220 Swift (5.56×56mmSR) is a semi-rimmed rifle cartridge developed by Winchester and introduced in 1935. It was the first factory loaded rifle cartridge with a muzzle velocity of over 4,000 ft/s (1,200 m/s). Until the introduction of the .223 WSSM the .220 Swift was the fastest commercial cartridge in the world.

Buy ammunition online with Surplus Ammo and enjoy rounds that have stood the test of time.