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The .22 long rifle, also known as the .22 LR or 5.7×15mmR, [4] [5] is a long-established variety of .22 caliber rimfire ammunition originating from the United States. It is used in a wide range of firearms including rifles , pistols , revolvers , and submachine guns .
Below is a list of rimfire cartridges (RF), ordered by caliber, small to large. 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 American-180 is a submachine gun developed in the 1960s which fires the .22 Long Rifle or .22 ILARCO cartridges from a pan magazine.The concept began with the Casull Model 290 that used a flat pan magazine similar to designs widely used prior to World War II.
.22 long rifle extra long (LR EX), a variant of .22LR with a longer casing but identical overall cartridge dimensions (see CCI Stinger).22 short, a cartridge used mostly in pocket pistols and mini-revolvers.22 Winchester Magnum Rimfire (WMR), a magnum cartridge that is longer and more powerful than the .22 LR
It is available for .22 LR (Model 8348) as well as .22 WMR (Model 8349) and .17 HMR (Model 8350) calibers. In late 2017, Ruger also introduced a thumbhole stock version for .22 LR (Model #8360) with a fenestrated fore-end and rollover cheekpiece. In early 2019, Ruger introduced stainless steel variants of all the previous four Target models.
The .22 long is a variety of .22 caliber (5.6 mm) rimfire ammunition.The .22 long is the second-oldest of the surviving rimfire cartridges, dating back to 1871, when it was loaded with a 29 gr (1.9 g) bullet and 5 gr (0.32 g) of black powder, 25% more than the .22 short on which it was based.
Originally, it slightly outperformed the .22 LR, but was "not noted for great accuracy", [2] while later smokeless loads achieved about the same muzzle velocity as the .22 LR. [citation needed] As with the .22 Winchester Automatic [3] and .22 Remington Automatic, [4] the .22 extra long will not chamber correctly in .22 long rifle weapons. [2]
The Winchester Model 121 is a single-shot bolt-action.22 caliber rimfire rifle that was produced from 1967 to 1973 by the Winchester Repeating Arms Company.The 121 can fire .22 Short, .22 Long, or .22 Long Rifle cartridges from its 20¾" barrel.