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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 ...
[4] [better source needed] The Thunderstruck's cylinder holds eight rounds of .22 Winchester Magnum Rimfire (.22 WMR). It has been offered with barrel lengths of 1.25 inches (32 mm) [4] [better source needed] and 1.5 inches (38 mm) [7] —the part number for both offerings is the same.
There were a number of engineering challenges to overcome in designing an autoloading .22 WMR handgun such as extraction problems. The extraction problems stem from the fact that the slow burning rifle powder of the .22 WMR cartridge develops a late peak pressure. This can cause the case mouth to expand and jam in the chamber when fired from a ...
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 .22 caliber firearms generally measure .222 inch (5.64 mm).
The Remington Model 597 is an American semi-automatic rifle that was manufactured by Remington Arms at the company's Mayfield, Kentucky and Huntsville, Alabama plant. The .22 Long Rifle version has a removable 10-round magazine, while the magazines for the larger .22 WMR and .17 HMR cartridges hold eight rounds.
The American was chambered for .17 HM2, .17 HMR, .22 LR, and .22 WMR in right-handed rifles, and for .17 HMR and .22 LR in left-handed rifles. Currently, the left-handed version is still in production. Versions were offered with either a 16.2" or 22.5" inch barrel with the muzzle threaded (1/2" x 20 threads per inch (TPI)) to accept a sound ...
It has a single action trigger pull of 3.5 to 5 lb f (16 to 22 N) and a manual safety device. [1] It is chambered in .22 Winchester Magnum Rimfire and the special, factory-shipped, double-stack magazine has a capacity of 30+1(chamber) rounds. [1] The PMR-30 uses fixed fiber optic open sights. [6]
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