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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 ...
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.
.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 currently the fastest production .22 caliber round in the world with muzzle velocities as high as 4,600 feet per second (1,402 meters per second). However, the .220 Swift still holds the record as the fastest .22 caliber centerfire cartridge with a published velocity of 4,665 ft/s (1,422 m/s) using a 29-grain (1.9 g) projectile and 42 ...
The 5 mm Remington Rimfire Magnum or 5 mm RFM [2] is a bottlenecked rimfire cartridge introduced by Remington Arms Company in 1969. Remington chambered it in a pair of bolt-action rifles, the Model 591 and Model 592 , but this ammunition never became very popular, and the rifles were discontinued in 1974. [ 3 ]
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5mm Remington Rimfire Magnum (5 mm RFM): a .20 caliber rimfire cartridge that is based on the .22 Winchester Magnum Rimfire case, it has greater muzzle energy, longer range, and a flatter trajectory over many of the other rimfire cartridges, uncommon but still available.
The Peters Cartridge Company was a company located along the Little Miami River in Kings Mills, Ohio, which specialized in gunpowder and ammunition production. Founded in 1887 by Gershom Moore Peters, the company supplied military ammunition to various countries during both world wars.