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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 .
.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 52-grain bullet can be pushed out of the muzzle at over 3,500 feet per second (1,100 m/s), placing the .22 PPC in the varmint and small game class. A 1 in 14-inch (1 in 355 mm) twist has become pretty much standard for these rifles although 1 in 12-inch (1 in 305 mm) twist will sometimes be found, depending on the load and bullet weight.
The overall length is still within the max overall length for the .22 long rifle. The .22 long is still produced even after the change over to smokeless powders. CCI currently loads a high-velocity .22 long with a muzzle velocity of 1,215 ft/s (370 m/s) and a muzzle energy of 95 ft⋅lbf (129 J) [2]
Firearm muzzle velocities range from approximately 120 m/s (390 ft/s) to 370 m/s (1,200 ft/s) in black powder muskets, [3] to more than 1,200 m/s (3,900 ft/s) [4] in modern rifles with high-velocity cartridges such as the .220 Swift and .204 Ruger, all the way to 1,700 m/s (5,600 ft/s) [5] for tank guns firing kinetic energy penetrator ammunition.
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 ...
Test barrel length: 22.75" rifle (higher velocity) and 5.0" pistol (lower velocity) The .22 TCM (Tuason, Craig, Micromagnum) is a proprietary bottlenecked rimless cartridge derived from a 5.56×45mm NATO (.223 Remington) parent case.
The 6XC is a 1000-yard cartridge, comparable to benchrest calibers such as 6x47mm Swiss Match, 6.5×47mm Lapua and 6 mm/22-250; it fits into cartridge class that exceeds the velocities of benchrest calibers such as 6mm BR Remington, 6mm BRX and 6mm Dasher. David Tubb has claimed several wins with the 6XC in NRA High Power National Championships ...