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2. .22 Long Rifle - Wikipedia

   en.wikipedia.org/wiki/.22_Long_Rifle

   Source (s): [2][3] The .22 Long Rifle, also known as the .22LR or 5.6×15mmR, [4][5] is a long-established variety of .22 caliber rimfire ammunition originating from the United States. It is used in a wide range of firearms including rifles, pistols, revolvers, and submachine guns.

3. .22 caliber - Wikipedia

   en.wikipedia.org/wiki/.22_caliber

   .22 caliber, or 5.6 mm, refers to a common firearms bore diameter of 0.22 inch (5.6 mm) in both rimfire and centerfire cartridges. Cartridges in this caliber include the very widely used .22 Long Rifle and .223 Remington/5.56×45mm NATO. .22 inch is also a popular air gun pellet caliber, second only to the ubiquitous .177 caliber.

4. Rimfire ammunition - Wikipedia

   en.wikipedia.org/wiki/Rimfire_ammunition

   Rimfire ammunition. A rim-fire (or rimfire) is a type of metallic cartridge used in firearms where the primer is located within a hollow circumferential rim protruding from the base of its casing. When fired, the gun's firing pin will strike and crush the rim against the edge of the barrel breech, sparking the primer compound within the rim ...

5. List of rimfire cartridges - Wikipedia

   en.wikipedia.org/wiki/List_of_rimfire_cartridges

   Rimfire ammunition is a type of metallic cartridge whose primer is located within a hollow circumferential rim protruding from the base of its casing. 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 ...

6. .22 Winchester Rimfire - Wikipedia

   en.wikipedia.org/wiki/.22_Winchester_Rimfire

   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.

7. .22 Winchester Magnum Rimfire - Wikipedia

   en.wikipedia.org/wiki/.22_Winchester_Magnum_Rimfire

   The .22 Winchester Magnum Rimfire, also known as the .22 WMR, .22 Magnum, .22 WMRF, .22 MRF, [2] or .22 Mag, is a rimfire cartridge.Originally loaded with a bullet weight of 40 grains (2.6 g) delivering velocities in the 2,000 feet per second (610 m/s) range from a rifle barrel, .22 WMR is now loaded with bullet weights ranging from 50 grains (3.2 g) at 1,530 feet per second (470 m/s) to 30 ...