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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 ...
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 .
Using Rock Island Armory M1911 pistols with 5-inch barrels, Taffin conducted tests at 20 yards with four-shot groups. The best results were achieved with Hodgdon Lil' Gunpowder (10.5 grains) and Alliant 2400 powder (9.3 grains), both of which are fast-burning pistol powders designed for magnum and high-velocity applications.
The Walther TP and TPH handguns are extremely compact double-action lightweight semi-automatic pistols in .22 Long Rifle and .25 ACP calibers. Pistols in this size range are sometimes referred to as pocket pistols, or Taschen Pistolen in German (TPH stands for the Taschen Pistole, Hahn, or "pocket pistol, hammer" variant).
Ruger SP101 .22lr, 8 shots, 4 1⁄5 inch barrel. The Ruger SP101 is a series of double-action revolvers produced by the American company Sturm, Ruger & Co. The SP101 is a small frame and all-steel-construction carry revolver, with a five-shot (.38 Special, .357 Magnum, and 9×19mm Parabellum); six-shot (.327 Federal Magnum, and .32 H&R Magnum); or eight-shot cylinder.
The .22 ILARCO / 5.7x24mmRF, also known as the .22 Winchester Short Magnum Rimfire or .22 American, [2] [3] was a rimfire cartridge designed in 1987 for the American-180 rimfire submachine gun. At the time the cartridge was created, the design of the American-180 had been taken over by the Illinois Arms Company, Inc., hence the ILARCO name.
[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.
In the early 1980s, High Standard Firearms had been dealing with financial problems and had to cease derringer production in 1984. Benjamin Johnson Technologies scaled up the design, into a .38 Special pocket gun known as the DA38 Derringer. In 1990, the design went to the American Derringer Company. [2] [3]