The munition .22 Long Rifle is the most widespread round throughout the world. It has a percussion class ring (the composition is located in the rim of the cartridge) with 5.5 millimeters, appeared in 1887. It was directly called as .22 (or .22 Short) and .22 Long under the license of American Arms & Tool Company and manufactured by Peters (United States) for the manufacture of weapons as well Stevens nationality.
This small size has the originality and the huge advantage of being both very economical, very precise, with very little recoil and low explosion, and is used interchangeably to rifles, revolvers, pistols and semi-automatic pistols. These weapons are used for target shooting foremost, to 25 meters (Standard Pistol, Women's Sport Pistol, Pistol 'Olympic Speed "for ITU-ISSF), 50 meters (small caliber rifle prone position, Rifle 3 Positions" Free Pistol) and up to 100 meters for firing on metal silhouettes, but also to kill small animals, it is classified as "harmful" and also used as reduced power military rounds.
The .22 Long Rifle cartridge contains a standard ball lead of 2.6 grams (40 grains) projectile at about 330 meters per second in a long-barreled rifle and 290 meters per second in a short barrel pistol. It develops 137 joules in the muzzle or equal to 14 kg/m.
There are many loads, ranging from .22 LR to subsonic to .22 LR "Stinger" branded as ITC (Projectile of 2.07 grams with lead copper hollow point, propelled to 500 meters per second delivering 259 joules or 26 kg/m) through .22 LR High Velocity "high speed (bullet of 2.46 grams to 390 meters per second, 177 joules or 18kg/m).
An incalculable number of brands that manufactures small arms produce .22 rounds for all purposes (hunting, soldiers, snipers). For the record, include: Eley (Great Britain), Remington, Winchester, ITC (USA), Geco-RWS (Germany), Lapua (Finland), Fiocca (Italy), Armscor (Philippines), Aguila (Mexico) ... Similarly, there are other manufacturers of rifles, pistols and revolvers for this munition (Winchester, Smith & Wesson, Hämmerli, Ruger, Browning, Feinwerkbau, Walther, Beretta, Weihrauch, Baikal ...)
It is possible to draw in weapons chambered in .22 LR ammunition Bosquet .22, .22 and .22 Long Short (but semi-automatic weapons then often require manual reset), excluding the .22 Magnum, a case that has wider and longer prohibiting passage in a chamber .22 LR.
The .22 Long munition (1.8 gram ball propelled to 220 meters per second, developing 44 joules in the muzzle, or 5 kg) which is behind the .22 Long Rifle, is itself derived from the .22 Court appeared in 1855, manufactured for the first revolvers Smith & Wesson 1857 (originally charged with 0.18 grams of black powder, which is currently in the smokeless powder propelling the ball from 1.8 grams to 260 meters a second for an energy of 61 joules or 7 kg/m, which is higher than the .22 Long as the latter is most often proposed version for .22 Long Z ", ie without gunpowder, only the boot providing propulsion of the projectile), which itself derived from the very first RIMFIRE ammunition, the .22 Bosquet [5.5 mm] and 6 mm made by Paris dealer Nicolas Louis Flobert, which is founded in 1845.
Finally, the recent .22 LR has just released, with 4.31 millimeters munition, with a 1.1 gram ball propelled to 530 meters per second, delivering 155 joules ( 16 kg/m).
Jumat, 21 November 2008
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