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  2. Obukhovskii 12-inch/52-caliber Pattern 1907 gun - Wikipedia

    en.wikipedia.org/wiki/Obukhovskii_12-inch/52...

    The Obukhovskii 12"/52 Pattern 1907 gun was a 12-inch (305 mm), 52-caliber naval gun. It was the most powerful gun to be mounted aboard battleships of the Imperial Russian Navy and later the Soviet Navy during both world wars. It was later modified by the Soviets and employed as coastal artillery and as a railway gun during World War II.

  3. List of multiple-barrel firearms - Wikipedia

    en.wikipedia.org/wiki/List_of_multiple-barrel...

    GAU-12 Equalizer: General Dynamics: 25×137mm United States: 1971 GAU-19: General Dynamics.50 BMG United States: 1983 Gryazev-Shipunov GSh-6-23: KBP Instrument Design Bureau: 23×115mm Soviet Union: 1975 Gryazev-Shipunov GSh-30-2: KBP Instrument Design Bureau: 30 mm caliber Soviet Union: 1981 GShG-7.62 machine gun: KBP Instrument Design Bureau ...

  4. 12 mm caliber - Wikipedia

    en.wikipedia.org/wiki/12_mm_caliber

    This is a list of firearm cartridges which have bullets in the 12 millimetres (0.47 in) to 12.99 millimetres (0.511 in) caliber range.. Length refers to the cartridge case length.

  5. GAU-19 - Wikipedia

    en.wikipedia.org/wiki/GAU-19

    The GAU-19/A is designed to accept standard NATO .50 caliber M9-linked ammunition. The rate of fire is selectable to be either 1,000 or 2,000 rounds per minute. The Humvee armament kit version fires at 1,300 rounds per minute.

  6. LeMat Revolver - Wikipedia

    en.wikipedia.org/wiki/LeMat_Revolver

    The 1st Model LeMats manufactured in Paris were originally chambered for .42 caliber balls or bullets in the cylinder and had a .63 caliber (18 gauge) smoothbore barrel and had a jointed ramrod (mounted on the right-hand side of the frame), which was used to load both barrels. Later, during the American Civil War, a lighter .35-caliber pistol ...

  7. Built-up gun - Wikipedia

    en.wikipedia.org/wiki/Built-up_gun

    The first built-up gun was designed by French artillery officer Alfred Thiéry in 1834 and tested not later than 1840. Also about 1840 another one was made by Daniel Treadwell, and yet another one was produced by Mersey Iron Works in Liverpool according to the John Ericsson's design.

  8. BL 12-inch Mk X naval gun - Wikipedia

    en.wikipedia.org/wiki/BL_12-inch_Mk_X_naval_gun

    The Mk X increased the bore length from the Mk IX's 480 to 540 in (12 to 14 metres), increasing muzzle velocity from 2,600 to 2,700 ft/s (790 to 820 m/s). Subsequent British attempts to further increase the power of 12-inch guns led to failure with the 50-calibre Mk XI and Mk XII guns; the Mk X was the last successful 12-inch British gun.

  9. 6P62 - Wikipedia

    en.wikipedia.org/wiki/6P62

    6P62 (6П62) is the GRAU designation of a Russian handheld machine gun chambered for the 12.7×108mm round. [ 1 ] [ 2 ] Its project code name is unknown. It is a large-frame automatic rifle with a short barrel and a folding bipod.