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The .22 Winchester Magnum Rimfire, also called .22 WMR, .22 Magnum, .22 WMRF, .22 MRF, 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). Compared to the faster but lighter .17 HMR, the .22 WMR impacts targets with higher kinetic energy within its effective range, albeit with a less flat-shooting bullet arc.

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  1. ddjchemist

    Shortest Rifle Review (CZ457 Lux .22 WMR)

    Last week I purchased a new CZ457 Lux in 22 WMR. Although the rifle has iron sights, I ordered a cheap scope for it since my eye-sight is poor for shooting over 50 yards. The scope arrived two days ago, so I installed it and I went to a shooting range this evening after work just to sight-in the...
  2. ddjchemist

    Any CZ 457 Lux .22 WMR Owners

    Every time I buy a rifle, I try to lie to myself "this is the last one". I went to a gun store this evening (Precise Shooter in Lynnwood, WA) and I could not resist not to buy another one. I purchased CZ 457 Deluxe in .22 WMR. I saw this rifle in the store and as soon as the store guy passed me...
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