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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 ...
.32-40 Ballard.32-40 Winchester.325 Winchester Short Magnum.327 Federal Magnum.33 Nosler.33 Winchester.333 Jeffery.338 Blaser Magnum.338 Edge.338 Federal.338 Lapua Magnum.338 Marlin express.338 Norma Magnum.338 Remington Ultra Magnum.338 Ruger Compact Magnum.338 Weatherby RPM.338 Winchester Magnum.338-06.338-378 Weatherby Magnum.338 Whisper
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]
7.5×55mm Swiss full metal jacket, armor piercing, tracer, and spitzer projectiles. The three bullets on the right show cannelure evolution Schlieren image sequence of a bullet traveling in free-flight, demonstrating the air pressure dynamics surrounding the bullet
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.
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.
In order to maximize the performance potential and reliability of the new cartridge, it was decided to lengthen the cartridge case from .45 ACP (.898 in) to 10 mm (.992 in) length. By trimming .45 Winchester Magnum brass to 10 mm case length and necking them to .40 caliber, the .40 Super began to take final shape. .40 Super ammunition box