| .22 Winchester Magnum | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 .22 Winchester Magnum Rimfire | ||||||||||||||||
| Type | Rifle | |||||||||||||||
| Place of origin | United States | |||||||||||||||
| Production history | ||||||||||||||||
| Designed | 1959 | |||||||||||||||
| Manufacturer | Winchester | |||||||||||||||
| Produced | 1959–present | |||||||||||||||
| Specifications | ||||||||||||||||
| Parent case | .22 Winchester Rimfire | |||||||||||||||
| Case type | Rimmed, straight | |||||||||||||||
| Bullet diameter | .224 in (5.804 mm) | |||||||||||||||
| Land diameter | .219 in (5.6 mm) | |||||||||||||||
| Neck diameter | .2435 in (6.185 mm) | |||||||||||||||
| Base diameter | .2455 in (6.236 mm) | |||||||||||||||
| Rim diameter | .300 in (7.62 mm) | |||||||||||||||
| Rim thickness | .050 in (1.27 mm) | |||||||||||||||
| Case length | 1.055 in (26.8 mm) | |||||||||||||||
| Overall length | 1.350 in (34.3 mm) | |||||||||||||||
| Rifling twist | 1-16" | |||||||||||||||
| Primer type | Rimfire | |||||||||||||||
| Maximum pressure | 24,000 psi (170 MPa) | |||||||||||||||
| Ballistic performance | ||||||||||||||||
| ||||||||||||||||
| Test barrel length: 24 inches (610 mm) Source(s): Cartridges of the World[1] | ||||||||||||||||
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 grains (1.9 g) at 2,200 feet per second (670 m/s).[3][4]
- ^ Cartridges of the World 11th Edition, Book by Frank C. Barnes, Edited by Stan Skinner, Gun Digest Books, 2006, ISBN 978-0-89689-297-2 pp. 490, 492
- ^ "XT 22 Magnum - 22 Magnum - Armscor International, Inc". armscor.com. Archived from the original on 13 August 2018. Retrieved 15 April 2018.
- ^ "Federal Premium Ammunition - Rimfire". federalpremium.com. Archived from the original on 2017-12-05. Retrieved 2017-12-05.
- ^ "CCI Ammunition - Product Detail". www.cci-ammunition.com.