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The .220 Swift (5.56×56mmSR) is a semi-rimmed rifle cartridge developed by Winchester and introduced in 1935 for small game and varmint hunting. It was the first factory-loaded rifle cartridge with a muzzle velocity of over 1,200 m/s (4,000 ft/s).
Most straight-pull rifles have a striker firing mechanism (without a hammer), [citation needed] and models using a hammer usually have a comparably longer lock time than hammer-less mechanisms. The Anschütz Fortner action used in biathlon is a good example of an ergonomical straight-pull rifle with good economy of motion and high operating speed.
It was introduced with the Remington Model 722 bolt-action rifle. [4] The accuracy and flat trajectory of the bullet resulted in the adoption of the round for varmint and benchrest rifles. The faster .220 Swift and .22-250 Remington provided more reach than the .222 Remington. These larger cartridges have roughly 50% more power than the .222 ...
The AR-15 rifle usually comes chambered for either the military cartridge 5.56×45mm or the .223 Remington. Because of the pressures associated with the 5.56×45mm, it is not advisable to fire 5.56×45mm rounds in an AR-15 marked as .223 Remington, since this can result in damage to the rifle or injury to the shooter. [1]
This cartridge is also sometimes known as the .22 Varminter or the .22 Wotkyns Original Swift. [2] Along with the .220 Swift, the .22-250 was one of the high-velocity .22 caliber cartridges that developed a reputation for remote wounding effects known as hydrostatic shock in the late 1930s and early 1940s. [3] [4]
An earlier high-velocity .22 caliber round from Weatherby called the .220 Weatherby Rocket was based on the .220 Swift though it was unsuccessful and never manufactured. [3] For more than 50 years, it was the only Weatherby cartridge to have an angled shoulder instead of the curved, double-radius shoulder found on other Weatherby cartridges.
The .220 Arrow is a wildcat modification of the .220 Swift. [ 7 ] .221 Remington Fireball is a shortened version of the .222 Remington introduced in the Remington XP-100 bolt-action handgun (sometimes called a hand rifle) in 1962. [ 4 ]
The Winchester Model 69 is a bolt-action.22 caliber repeating rifle first produced in 1935 by the Winchester Repeating Arms Company. It was marketed as Winchester's mid-priced bolt-action rimfire sporting rifle, positioned above inexpensive single-shot rifles such as the Model 68 and beneath the prestigious Model 52. Model 69/69A were sold with ...