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Ruger-57 – Semi-automatic pistol chambered for the 5.7×28mm cartridge; Smith & Wesson M&P 5.7 – Semi-automatic pistol chambered for the 5.7×28mm cartridge; Thompson/Center Contender – The Thompson/Center Contender is a break-action single-shot pistol or rifle that was introduced in 1967 by Thompson/Center Arms. It can be chambered in ...
Handloading is possible with 5.7×28mm ammunition, and 5.7 mm (0.22 in) bullets are widely available due to use in .223 Remington and 5.56×45mm NATO cartridges. [10] Handloaders have noted that the 5.7×28mm cartridge is very sensitive to small changes in powder charge or overall length (OAL) with a bullet inserted. [ 47 ]
Winchester claims a muzzle velocity (MV) of 3,225 ft/s with a 140 grain bullet for their 7mm WSM cartridge; the claimed muzzle energy (ME) is 3,233 ft. lbs. With a 160 grain bullet the Winchester figures are 2990 ft/s and 3176 ft. lbs. at the muzzle. The lighter, shorter 7mm bullets are preferred in these short case magnums. [2]
It was originally named the MMJ 5.7mm [1] by its designer and is also known in the U.S. as the 5.7mm Johnson, the Johnson MMJ 5.7mm Spitfire, and the .22 Johnson, (or 5.7×33mm internationally). In 1963, Melvin M. Johnson developed a conversion of the M1 Carbine (by either relining or re-barreling the M1 Carbine ) to a .224 caliber bore, using ...
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The 5.7 Rock is a semi-automatic pistol developed, manufactured, and sold by Palmetto State Armory. [2] It is chambered for the FN 5.7×28mm cartridge and is characterized by its generally low recoil. It is a competitor to the Five-seven, the Ruger-57, the M&P 5.7 and the TİSAŞ PX-5.7. [4] [5]