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Comparison of centerfire and rimfire ignition Fired rimfire (left) and centerfire cartridges. A rimfire firing pin produces a notch at the edge of the case; a centerfire pin produces a depression in the center of the primer. It is named rimfire ammunition as the firing pin strikes and crushes the base's rim to ignite the primer. The rim of such ...
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 .
The large barrel volume to chamber volume ratio of a .22 rimfire rifle means that the powder gasses have expanded as far as they can before the bullet reaches the muzzle of a normal-length rifle barrel, and the light .22 long bullet has less inertia than the .22 long rifle. The quieter report and lower penetration of the .22 long cartridge were ...
A youth rifle is a rifle designed or modified for fitting children or other small-framed shooters. A youth rifle is often a single-shot .22 caliber rifle, or a bolt-action rifle, although some youth rifles are semi-automatic. They are usually very light, with a greatly shortened length of pull, which is necessary to accommodate children.
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 most common rimfire cartridges are chambered for .17 caliber and .22 caliber. The bullet diameter for .17 ...
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 ...
Introduced in the Winchester M1890 slide rifle, it had a flat-nose slug, and is identical to the .22 Remington Special (which differed only in having a roundnosed slug). [3] It uses a flat-based, inside-lubricated bullet, which differs from the outside-lube heeled bullet of the .22 BB, .22 CB, .22 Short, .22 Long, .22 Long Rifle, and .22 Extra Long cartridges.
.44 Henry Flat cartridge. The .44 Henry, also known as the .44 Henry Flat, the .44 Rimfire, the .44 Long Rimfire, and the 11x23mmRF (11x23mm Rimmed) in Europe, [2] is a rimfire rifle and handgun cartridge featuring a .875 in (22.2 mm)-long brass or copper case.