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For two reasons, canister shot fired from the 3-inch rifle was less effective than canister fired from a 12-pounder Napoleon or a M1841 12-pounder howitzer. First, its 3-inch bore was narrower than the 12-pounder's bore and could fire fewer canister balls. Second, the rifling of the barrel caused the canister to be thrown in an irregular pattern.
The M1841 6-pounder field gun was a bronze smoothbore muzzleloading cannon that was adopted by the United States Army in 1841 and used from the Mexican–American War to the American Civil War. It fired a 6.1 lb (2.8 kg) round shot up to a distance of 1,523 yd (1,393 m) at 5° elevation.
The barrels of the guns were longer than corresponding howitzers, and called for higher powder charges to achieve the desired performance. Field guns were produced in 6-pounder (3.67 inch bore), 9-pounder (4.2 inch bore), and 12-pounder (4.62 inch bore) versions.
Wiard described two calibers: a six-pounder (2.72 kg) rifle with a 2.6 in (66 mm) bore, and a twelve-pounder (5.44 kg) smoothbore weapon with a 3.67 in (93 mm) bore. All survivors are rifled, though this may have occurred long after manufacture; this was a common practice during the war. [ 5 ]
Naval gun 47 mm 1.85 inch Ordnance QF 6-pounder: Anti-tank gun 57 mm 2.244 inch Ordnance BL 10-pounder Mountain gun: Mountain gun 69.8 mm 2.75 inch 12-pounder (multiple types) Light field gun 76.2 mm 3 inch Ordnance QF 13-pounder: Light field gun 76.2 mm 3 inch 15- pounder (multiple types) Field gun 76.2 mm 3 inch Ordnance QF 17- pounder: Anti ...
6-pounder gun or 6-pdr, usually denotes a 57-millimetre (2.2 in) gun firing a projectile weighing approximately 6 pounds (2.7 kg). Guns of this type include: QF 6 pounder Hotchkiss , a 57 mm naval gun of the 1880s; a similar weapon was designed by Driggs-Schroeder for the US Navy
The unusual 2.9-inch caliber was the same as that of a smoothbore 3-pounder gun, which fired a round shot with a diameter of 2.9 inches. [16] Rifled projectiles were heavier than smoothbore shot because they were elongated. [17] The 10-pounder Parrott rifle was mounted on the standard gun carriage for the M1841 6-pounder field gun.
[37] [fn 7] According to historian Jennings C. Wise, the armament of the battery "from first to last consisted of 3 pieces; a Blakely imported British rifled piece, which fired a percussion shell; a smooth-bore 12-pounder howitzer; and a 3-inch iron rifle." [38] Four surviving 3.5-inch Blakely's have been placed at Shiloh National Military Park ...