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The .700 Nitro Express (17.8×89mmR) is a big-game rifle cartridge. The cartridge is typically charged with around 250 grains of powder, in addition to a two-grain igniter charge (to reduce the tendency of the cartridge to hang fire from such large powder charges). [ 3 ]
The term "Express" was coined by James Purdey in 1856, derived from the express train, to publicise the bullet velocity of his double rifles and became common parlance for many rifle cartridges. The addition of the word "Nitro" stemmed from the propellant used in these cartridges, cordite, which is composed of nitrocellulose and nitroglycerine.
The safari heyday of the early 20th century "nitro era" records much literature on such calibers as the .577 Nitro Express, .375 H&H Magnum, .416 Rigby, .404 Jeffery, .505 Gibbs, .450 Nitro Express, and .470 Nitro Express. These rifles came out in single shot, bolt action, and double rifle configurations and continued to be used until ivory ...
Double rifles have been produced in all calibres from .220 in (5.6 mm) to .700 in (17.8 mm). Traditional British double rifle calibres include the Rook rifle, Black Powder Express and rimmed Nitro Express families of cartridges and many of these can still be obtained today. [7]
A hand-built gun from H&H can cost around £60,000 for a shotgun and close to £100,000 for some rifles, with prices roughly doubling with luxury engraving, and there is a waiting period of 2–3 years between ordering and delivery. [4] In the 1990s, Holland & Holland started a major expansion programme.
The .600 Nitro Express is a slightly tapered walled, rimmed, centerfire rifle cartridge designed for use in single-shot and double rifles. [4]The cartridge fires a .620 in (15.7 mm) diameter, 900 gr (58 g) projectile with three powder loadings: the standard being 100 gr (6.5 g) of cordite at a muzzle velocity of 1,850 ft/s (560 m/s); a 110 gr (7.1 g) loading which generates a muzzle velocity ...
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This was the first magazine rifle that could perform on a par with the powerful Nitro-Express double rifles, for one-third to one-fifth of their prices. John Rigby was well versed in Nitro Express cartridges as well. In 1898, with the help of the Curtis's & Harvey Gunpowder Company, he had introduced the first of them: the Rigby .450 NE.