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The RML 9-inch guns Mark I – Mark VI [note 1] were large rifled muzzle-loading guns of the 1860s used as primary armament on smaller British ironclad battleships and secondary armament on larger battleships, and also ashore for coast defence.
The 7mm Backcountry is a modern rifle cartridge using cartridge cases of a proprietary steel alloy able to withstand higher pressures than traditional brass alloys. The objective is to obtain higher muzzle velocities from short-barreled rifles which are lighter and easier to carry than 20th-century rifles intended for long range shooting. [1]
These used Armstrong's method of manufacturing the gun barrel, and the first attempts to produce a RML also used his shunt principle for rifling. This is why one could carelessly refer to these guns as Armstrong guns, but they were not manufactured by Armstrong's company, which would then be known as Elswick Ordnance Company, part of Armstrong's.
A muzzle-loading rifle is a muzzle-loaded small arm that has a rifled barrel rather than a smoothbore, and is loaded from the muzzle of the barrel rather than the breech. Historically they were developed when rifled barrels were introduced by the 1740ies, which offered higher accuracy than the earlier smoothbores.
Charges of up to 150 grains (9.7 g) of FFG Black Powder or three (3) 50-grain Pyrodex Pellets produce velocities of approximately 2,400 ft/s (730 m/s) at the muzzle. Omega: This T/C muzzleloader was offered in several barrel lengths and in calibers .45 and .50. It can handle 150 grains (9.7 g) of Black Powder or Pyrodex equivalent, or three 50 ...
The RML 10-inch guns Mk I – Mk II were large rifled muzzle-loading guns designed for British battleships and monitors in the 1860s to 1880s. They were also fitted to the Bouncer [4] and Ant-class flat-iron gunboats. They were also used for fixed coastal defences around the United Kingdom and around the British Empire until the early years of ...
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A rifled muzzle loader in the forecastle of HMS Gannet (1878). A rifled muzzle loader (RML) is a type of large artillery piece invented in the mid-19th century. In contrast to smooth bore cannon which preceded it, the rifling of the gun barrel allowed much greater accuracy and penetration as the spin induced to the shell gave it directional stability.