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The 12-pdr rifle was designed in the early 1850s by British manufacturer Joseph Whitworth, who had recently been contracted to improve the Pattern 1853 Enfield.During his experiments with the Enfield, Whitworth was inspired to begin experimenting with a hexagonally-rifled barrel; Whitworth would later apply these principles to his field guns.
In British service "12-pounder" was the rounded value of the projectile weight, and "12 cwt (hundredweight)" was the weight of the barrel and breech, to differentiate it from other "12-pounder" guns. As the Type 41 3-inch (7.62 cm)/40 it was used on most early battleships and cruisers of the Imperial Japanese Navy , though it was commonly ...
The Whitworth, designed by Joseph Whitworth and manufactured in England, was a rare gun during the war but an interesting precursor to modern artillery in that it was loaded from the breech and had exceptional accuracy over great distance. An engineering magazine wrote in 1864 that, "At 1600 yards [1500 m] the Whitworth gun fired 10 shots with ...
They were a bit liable to disturbances, [9] but the problem with the wedge breech was solved to satisfaction. [10] In 1864 a comparative test of three types of 70-pounder guns took place. In this test, the Armstrong breechloader could not stand up against newer Rifled Muzzle Loaders (RML) designed by himself and Whitworth.
When locked, a firing pin aligns with the primer, the breech is otherwise solid. When rotated open, a slot in the drum is exposed for extraction and feeding of a new round. Though first used on the Werndl-Holub, this action is commonly known as a cannon breech due to its association with the French 75mm Model of 1897 cannon.
The Whitworth rifle was an English-made percussion rifle used in the latter half of the 19th century. A single-shot muzzleloader with excellent long-range accuracy for its era, especially when used with a telescopic sight , the Whitworth rifle was widely regarded as the world's first sniper rifle .
The breech-screw was locked by turning to the left, unlike standard service guns made by the Royal Gun Factory, which all locked to the right. Rifling consisted of 28 grooves of the polygroove "Elswick section" type, increasing from 0 to 1 turn in 30 calibres (i.e. 1 turn in 180 inches) at the muzzle.
Armstrong screw-breech guns were initially adopted by the British Army and Royal Navy, but concerns about limited armour penetration of the shells due to limited maximum velocity, safety concerns with the breech blocks blowing out of guns, and higher skill levels demanded of gunners led the British Government to revert to rifled muzzle-loaders ...