.22 Winchester Rimfire
The .22 Winchester Rimfire (commonly called the .22 WRF or .22 Remington Special) is an American rimfire rifle cartridge.
| .22 Winchester Rimfire | ||||||||||||||||
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.22 Long Rifle (left) and .22 Winchester Rimfire (right). | ||||||||||||||||
| Type | Rifle | |||||||||||||||
| Place of origin | United States | |||||||||||||||
| Production history | ||||||||||||||||
| Designed | 1890 | |||||||||||||||
| Produced | 1890–present | |||||||||||||||
| Specifications | ||||||||||||||||
| Case type | Rimmed, straight | |||||||||||||||
| Bullet diameter | .2285 in (5.80 mm) | |||||||||||||||
| Neck diameter | .2435 in (6.18 mm) | |||||||||||||||
| Base diameter | .2455 in (6.24 mm) | |||||||||||||||
| Rim diameter | .300 in (7.6 mm) | |||||||||||||||
| Rim thickness | .050 in (1.3 mm) | |||||||||||||||
| Case length | .965 in (24.5 mm) | |||||||||||||||
| Overall length | 1.180 in (30.0 mm) | |||||||||||||||
| Rifling twist | 1-14 in (360 mm) | |||||||||||||||
| Primer type | Rimfire | |||||||||||||||
| Maximum pressure | 19,000 psi (130 MPa) | |||||||||||||||
| Ballistic performance | ||||||||||||||||
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| Source(s): Barnes & Amber 1972 | ||||||||||||||||
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