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The .450 Rigby is a rifle cartridge designed in 1994 by John Rigby & Co. for the purpose of hunting large, thick-skinned dangerous African game animals. The cartridge is essentially a .416 Rigby necked up to accept a .458 in (11.6 mm) bullet, although with a higher operating pressure and much of the original taper removed.
The .450 Nitro Express was the first Nitro Express cartridge, developed around 1898 by John Rigby. This cartridge was based on the then popular .450 Black Powder Express case with 70 grains (5 g) of Cordite and a 480-grain (31 g) jacketed bullet.
List of rifle cartridges, by primer type, calibre and name. ... .500/450 Nitro Express.450 Rigby.450 Dakota.450 Watts Magnum.458×2-inch American.458 Express
The unveiling of the .450 Nitro Express by John Rigby & Company in 1898 heralded the beginning of the modern big-game cartridge. Created from loading the already popular .450 Black Powder Express with cordite, the .450 NE was a fast and accurate cartridge capable of taking all African and Indian dangerous game.
The .416 Rigby / 10.57x73mm is a rifle cartridge designed in 1911 by London based gunmaker John Rigby & Company, for hunting dangerous game. [2] It is the first cartridge to use a bullet of .416 inch (10.57 mm) diameter.
The .500/450 Nitro Express is a rimmed bottlenecked cartridge designed for use in single-shot and double rifles. It is based on the old black-powder .500/450 Magnum Black Powder Express. It fires a .458-inch (11.6 mm) 480-grain (31 g) projectile at over 2,175 feet per second (663 m/s). [1]
Although the .378 Weatherby Magnum case was inspired by the .416 Rigby case, it is considered a unique case which has gone on to serve as the parent cartridge of several high performance cartridges. The .460 Weatherby Magnum requires a case with the large propellant capacity necessary to propel a 500 gr (32 g) bullet at 2,700 ft/s (820 m/s).
The .450/400 Nitro Express is a Nitro Express rifle cartridge that is produced in three case lengths: 2 3 ⁄ 8-inches, 3 inches and 3 1 ⁄ 4-inches, [2] and is intended for use in single shot and double rifles. The 3-inch and 3 1 ⁄ 4-inch versions are considered classic Nitro Express cartridges.