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The 7×61mm Sharpe & Hart Magnum belted cartridge (A.K.A. 7mm S&H Super [1]) was developed by Philip B. Sharpe and Richard (Dick) Hart in the 1950s. Some articles claim it was based on the .300 H&H Magnum case, [1] [2] while others claim it was based on the 7x61 MAS M1907 case.
Gates' .414 SuperMag. A super magnum is a longer and/or more powerful version of a "magnum" cartridge.Although the term "super magnum" typically refers to a handgun cartridge, created by lengthening an existing straight-case design, it can also refer to rifle and shotgun cartridges, such as the .17 Winchester Super Magnum and the 3 1 ⁄ 2" 12 Gauge Super Magnum.
Introduced by the Federal Cartridge company, now known as Federal Premium Ammunition, the .327 Federal Magnum was an attempt to improve on the .32 H&R Magnum introduced in 1984. Like the .32 H&R, the .327 Federal is a lengthened version of the original .32 S&W cartridge, which dates back to 1878.
A magnum cartridge is a firearm cartridge with a larger case size than, or derived from, a similar cartridge of the same projectile caliber and case shoulder shape. [ clarification needed ] The term derives from the .357 Magnum , the original revolver cartridge with this designation.
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This ammunition does not meet the FBI Ammunition Testing Protocol. With a 3.75-inch test barrel, HST 380 Auto Micro ammunition achieves a muzzle velocity of 1,030 feet per second, a velocity of 990 feet per second at 25 yards, and a velocity of 950 feet per second at 50 yards.
Although not originally designed for handguns, several rifle and shotgun cartridges have also been chambered in a number of large handguns, primarily in revolvers like the Phelps Heritage revolver, Century Arms revolver, Thompson/Centre Contender break-open pistol, Magnum Research BFR, and the Pfeifer Zeliska revolvers.
The typical 400-grain (26 g) bullet will have a sectional density of .338 for the .400 H&H Magnum vs. .330 for the .416 caliber cartridges. The .400 H&H Magnum shares the same caliber with several .400 cartridges from the turn of the 20th century such as the .400 Jeffery Nitro Express, the 405 Winchester and the series of .450/400 cartridges.