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The .577 BPE originated around 1870 with the 2 1 ⁄ 2-inch variant. [1]The 3-inch cartridge has survived to the current day as the .577 Nitro for Black, the same cartridge loaded with mild loadings of modern smokeless powder, carefully balanced through trial to replicate the ballistics of the Black powder version.
A 3 + 1 ⁄ 8-inch variant would later be loaded with cordite to become the .577/500 Nitro Express. [1] For some time the .577/500 No. 2 BPE was loaded with cordite to become the .577/500 No. 2 Nitro for Black, the same cartridge loaded with mild loadings of cordite, carefully balanced through trial to replicate the ballistics of the black ...
The .577 Nitro Express 3-inch [76 mm] is a conversion of the .577 Black Powder Express 3-inch, it fires a 750-grain (49 g) projectile at over 2,050 feet per second (620 m/s). This cartridge was to become the most popular of the three and a standard round for African elephant hunters in the early 20th century. [3]
With the success of the .450 NE, various people (it is not clear who) decided to follow Rigby’s example and load the old .450/400 Black Powder Express, .500 Black Powder Express and .577 Black Powder Express cartridges with cordite, creating the .450/400 Nitro Express, .500 Nitro Express and .577 Nitro Express, the latter two offering greater ...
The .577/500 NE was developed by loading a 3 + 1 ⁄ 8-inch variant of the .577/500 Black Powder Express with smokeless cordite. The latter was developed by necking down the .577 Black Powder Express to .508". [2] Whilst very similar to the .577/500 No 2 Black Powder Express the two are not interchangeable. [1]
The early express cartridges used a heavy charge of black powder to propel a lightweight, often hollow point bullet, at high velocities to maximize point blank range. Later the express cartridges were loaded with nitrocellulose-based gunpowder, leading to the Nitro Express cartridges, the first of which was the .450 Nitro Express. [2]
The .577 Black Powder Express was the go-to dangerous game caliber from the 1870s through 1900. It spawned the .577 Express around 1890, which used smokeless cordite instead of black powder, and then the .577 Nitro Express in 1900, which used modern metal jacketed and solid bullets pushed by more modern smokeless powders.
.450 Nitro Express.450 No 2 Nitro Express.450 Rigby.500/450 Magnum Black Powder Express.500/450 Nitro Express.500/450 No. 1 Black Powder Express.577/450 Martini–Henry.455 Webley.461 Gibbs.465 H&H Magnum.500/465 Nitro Express.470 Nitro Express.475 Nitro Express.475 No 2 Nitro Express.476 Nitro Express.476 Enfield.500 Black Powder Express