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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 .
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.
The most common rimfire cartridges are chambered for .17 caliber and .22 caliber. The bullet diameter for .17 caliber firearms generally measure .172 inch (4.37 mm), while the bullet diameter for .22 caliber firearms generally measure .222 inch (5.64 mm).
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). [2] It uses a flat-based, inside-lubricated bullet, which differs from the outside-lube heeled bullet of the .22 Short, .22 Long, .22 Long Rifle, and .22 Extra Long cartridges.
.22-250 Remington maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm) / Imperial (inches). The .22-250 Remington / 5.7x48mm is a very high-velocity, short action, .22 caliber rifle cartridge primarily used for varmint hunting and small game hunting. It is capable of reaching over 4,000 feet per second.
The .22 Hornet or 5.6×36mmR Hornet [2] is a varminting, small-game hunting, survival and competition centerfire rifle cartridge commercially introduced in 1930. It is considerably more powerful than the rimfire.22 WMR and the .17 HMR, achieving higher velocity with a bullet twice the weight of the .17 HMR bullet.
The company introduced the .22 Long Rifle round and made a number of rifle, shotgun, and target pistol designs. By 1902, they were advertising themselves as "the largest producers of sporting arms in the world". [1] They were purchased by New England Westinghouse on May 28, 1915, and again by Savage Arms on April 1, 1920. [2]
The .17 HM2 (Hornady Mach 2) is based on the .22 Long Rifle and offers similar performance advantages over its parent cartridge, at a significantly higher cost. While .17 HM2 sells for about four times the cost of .22 Long Rifle ammunition, it is still significantly cheaper than most centerfire ammunition and somewhat cheaper than the .17 HMR.