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A full metal jacket (FMJ) bullet is a small-arms projectile consisting of a soft core (often lead) encased in an outer shell ("jacket") of harder metal, such as gilding metal, cupronickel, or, less commonly, a steel alloy. A bullet jacket usually allows higher muzzle velocities than bare lead without depositing significant amounts of metal in ...
The .40 S&W (10.2×22mm) is a rimless pistol cartridge developed jointly by American firearms manufacturers Smith & Wesson and Winchester in 1990. [3] The .40 S&W was developed as a law enforcement cartridge designed to duplicate performance of the Federal Bureau of Investigation's (FBI) reduced-velocity 10mm Auto cartridge which could be retrofitted into medium-frame (9 mm size) semi ...
Eduard Alexander Rubin (17 July 1846 – 6 July 1920) was a Swiss mechanical engineer who is most notable for having invented the full metal jacket bullet in 1882. His most famous cartridge was the 7.5×55mm Swiss which was the standard ammunition for the Schmidt–Rubin, K31 and Stgw 57 military rifles.
JSP is a semi-jacketed round as the jacket does not extend to the tip Various hollow points: .45 Auto, .38 Special, .44 S&W Special, .44 Remington Magnum.45 ACP Federal HST 230gr hollow point cartridge, with two rounds of CCI Standard Velocity .22 LR for comparison purposes.40 S&W round, complete cartridge and expanded bullet A 9mm hollow point ...
Over the years, a number of different bullet weights and styles have been offered, including 122, 140, 160, 165, 166, 180, and 217 gr in lead, soft- and hollow-point, full metal case, blanks, and shot shells. The most common current loading is a 200-gr bullet at 1190 ft/s. [3]
Frangible bullets may be lighter or longer than conventional bullets of the same caliber. The jacketed frangible bullet in the center is longer than the outer soft-point bullets with traditional lead cores. Each of the three .30 caliber (7.62 mm) bullets weighs 150 grains (9.7 g) but the lower density frangible core requires greater volume.
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To prevent lead fouling in the bore caused by the higher pressures and velocities, soft lead bullets were replaced by newly introduced full metal jacket bullets. [21] However, it soon became apparent that such hard, small-caliber rounds were less effective at wounding or killing an enemy than the older, large-caliber soft lead bullets.