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22 win auto
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, the .22 Win Auto was never used in any other firearm. It will not chamber correctly in other .22 rimfire weapons, nor will other .22 rimfire ammunition, including the very dimensionally-similar .22 Remington Automatic, interchange with it. This feature was to prevent use of black powder rounds, which were still popular when it first appeared, from being used in the M1903, resulting in powder residue rapidly clogging the action and rendering the weapon inoperable.
The power of the .22 Win Auto is comparable to the .22 Long rimfire, and while it fires a heavier bullet, it offers no performance edge on either the .22 Long or the very much more common .22 Long Rifle.
Just inherited a Winchester 1903 from my grandfather now I need to find some ammo for it. It appears to be unavaliable online, hoping to find someone with a spare box or two. Also curious if anyone has any experience handloading this cartridge.
Thanks,