.22 caliber

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22 caliber, or 5.6mm caliber, refers to a common firearms bore diameter of 0.22 in (5.6 mm). Both .22 Long Rifle and 5.56×45mm NATO are very widely used, and it is also a popular air gun pellet caliber.

.22 in caliber rimfire variations include:

.22 inch centerfire cartridges include:

See also[edit]