The .220 Swift (5.56×56mmSR) is a semi-rimmed rifle cartridge developed by Winchester and introduced in 1935 for small game and vermin hunting. It was the first factory loaded rifle cartridge with a muzzle velocity of over 1,200 m/s (4,000 ft/s). With modern powders and precision loadings, the round is capable of pushing 1500+ meters a second.
|Ammunition Type||Damage||Bullet Velocity (m/s)||Barrier Penetration||Armor Piercing|
|40gr Ballistic Tip||4.9||1296||6.25||4|
|55gr Soft Point||5.4||1128||4.25||4|
|50gr Soft Point||5.2||1179||3.95||4|