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  2. 47 mm Model 1931 anti-tank gun - Wikipedia

    en.wikipedia.org/wiki/47_mm_Model_1931_anti-tank_gun

    Maximum firing range 2 km (6,600 ft) [ 4 ] The Royal Cannon Foundry 47mm anti-tank gun Model 1931 ( French : Canon anti-char de 47mm Fonderie Royale de Canons Modèle 1931 , abbreviated to C.47 F.R.C. Mod.31 ) was an artillery piece developed in 1931 for the Belgian Army which saw widespread service in the Battle of Belgium in 1940.

  3. Gauge (firearms) - Wikipedia

    en.wikipedia.org/wiki/Gauge_(firearms)

    A 12-gauge shotgun, nominally 18.5 mm (0.73 in), can range from a tight 18 mm (0.71 in) to an extreme overbore of 20 mm (0.79 in). Some also claim an increased velocity with the overbored barrels, up to 15 m/s (49 ft/s), which is due to the larger swept volume of the overbored barrel.

  4. Cannone da 47/32 - Wikipedia

    en.wikipedia.org/wiki/Cannone_da_47/32

    Caliber: 47 mm (1.9 in) Barrel length: 1.68 metres (5 feet 6 inches) Length of Bore: 1.525 m (5.00 ft) Length of Rifling: 1.33 metres (4 feet 4 inches) Travelling Weight: 315 kg (694 lb) Weight in Action: 277 kg (611 lb) Elevation: -15 degrees to +56 degrees; Traverse: 62 degrees

  5. Stadiametric rangefinding - Wikipedia

    en.wikipedia.org/wiki/Stadiametric_rangefinding

    The term stadia comes from a Greek unit of length Stadion (equal to 600 Greek feet, pous) which was the typical length of a sports stadium of the time. Stadiametric rangefinding is used for surveying and in the telescopic sights of firearms , artillery pieces , or tank guns , as well as some binoculars and other optics.

  6. Type 1 47 mm anti-tank gun - Wikipedia

    en.wikipedia.org/wiki/Type_1_47_mm_anti-tank_gun

    The Type 1 47 mm AT gun was introduced to combat service in 1941, with the intent of it replacing the Type 94 37 mm (1.5 in) anti-tank gun. It was very effective for its role, with American personnel calling it "an excellent weapon, with mechanized carriage and a high muzzle-velocity" that "proved most effective in combat," though it was not ...

  7. M224 mortar - Wikipedia

    en.wikipedia.org/wiki/M224_mortar

    The M224 60 mm Lightweight Company Mortar System (LWCMS) is a smoothbore, muzzle-loading, high-angle-of-fire mortar used for close-in support of ground troops. It was deployed extensively in the War in Afghanistan by the United States military .

  8. QF 3-pounder Hotchkiss - Wikipedia

    en.wikipedia.org/wiki/QF_3-pounder_Hotchkiss

    The first was the short 47 mm SFK L/33 H of 1890 produced under license by Skoda. The second was the long 47 mm SFK L/44 S of 1897 produced under license by Skoda. These two guns were the primary rapid fire anti-torpedo boat guns of many ships built or refitted between 1890 and 1918. [ 8 ]

  9. SPG-9 - Wikipedia

    en.wikipedia.org/wiki/SPG-9

    The SPG-9 Kopyo (Russian: СПГ-9 Копьё, transliterated: Stankovyi Protivotankovyi Granatomet "Kopyo" - Easel Anti-tank Grenade Launcher "Spear") is a tripod-mounted man-portable, 73 millimetre calibre recoilless gun developed by the Soviet Union.