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The .22 Winchester Automatic (also known as the .22 Winchester Auto and occasionally .22 Win Auto) is a .22 in (5.6 mm) American rimfire rifle cartridge. Introduced for the Winchester Model 1903 semiautomatic rifle, [ 1 ] the .22 Win Auto was never used in any other firearm. [ 1 ]
The most common rimfire cartridges are chambered for .17 caliber and .22 caliber. The bullet diameter for .17 caliber firearms generally measure .172 inch (4.37 mm), while the bullet diameter for .22 caliber firearms generally measure .222 inch (5.64 mm).
.22 Winchester Rimfire (.22 WRF): also known as the .22 Remington Special, it has slightly more muzzle energy than the more common .22 Long Rifle rimfire cartridge, uncommon but still available. .22 Winchester Automatic : also known as the .22 Win Auto, it was only chambered for the Winchester Model 1903 semi-automatic rifle , uncommon but ...
Introduced in the Winchester M1890 slide rifle, it had a flat-nose slug, and is identical to the .22 Remington Special (which differed only in having a roundnosed slug). [2] It uses a flat-based, inside-lubricated bullet, which differs from the outside-lube heeled bullet of the .22 Short, .22 Long, .22 Long Rifle, and .22 Extra Long cartridges.
Originally, it slightly outperformed the .22 LR, but was "not noted for great accuracy", [2] while later smokeless loads achieved about the same muzzle velocity as the .22 LR. [citation needed] As with the .22 Winchester Automatic [3] and .22 Remington Automatic, [4] the .22 extra long will not chamber correctly in .22 long rifle weapons. [2]
It was first chambered for the .22 Winchester Automatic cartridge. In 1919, the Model 1903 moniker was shortened to Model 03, and following a partial redesign in the 1930s, was renamed the Model 63. In addition to other changes, the model fired the .22 Long Rifle cartridge. This cartridge was more popular than the .22 Winchester Automatic ...
.22 extra long, a cartridge predating the .22 LR, not offered commercially since 1935.22 Remington Automatic, a cartridge specific to the Remington Model 16 semi-automatic rifle, not offered commercially since 1928.22 Winchester Automatic, a cartridge specific to the Winchester Model 1903 semi-automatic rifle, not offered commercially since 1932
.22 Remington Automatic.22 Spitfire.22 Winchester Automatic.22 Winchester Centerfire.22 Winchester Rimfire; 23×115mm; 25 mm grenade.25 NAA.25 Remington.25 Short.25 Stevens.25 Stevens Short.25-25 Stevens.25-45 Sharps.30 Newton.30 Super Carry.30 Thompson Center.32-40 Ballard.33 Winchester.33-40 Pope.35 S&W Auto.35 Winchester.35 Winchester Self ...