12/8/2023 0 Comments 16 inch gun muzzle velocity![]() The first test guns had a bore length of 57 calibers and when tested on an M4 tank it was found that the long barrel caused balance problems. The 76 mm also differed in that successive models received a muzzle brake and faster rifle twist.Īberdeen Proving Ground began evaluations of the first test guns, designated the T1, around August 1, 1942. The "76-mm" designation was chosen to help keep the supply of ammunition from being confused between the two guns. It fired the same projectiles as the 3-inch Gun M1918 3-inch (76 mm) M7 gun mounted on the 3in Gun Motor Carriage M10 tank destroyer and towed 3-inch Gun M5 anti-tank gun, but from a different cartridge case. It was a new gun with a breech similar to that of the 75 mm M3 Gun but with a new tube (barrel and cartridge chamber) design to accommodate a new cartridge. New stronger steels were used to create a weapon of similar performance weighing about 1,200 lb (540 kg). The 3 inch gun, based on the 3-inch gun M1918 anti-aircraft gun, was considered too large and heavy at about 1,990 lb (900 kg) for mounting in the M4 tank. ![]() did not enter the ground war in the European-African-Middle Eastern region until Operation Torch in November 1942. The first specimens of the weapon that was to become the 76 mm Gun M1 were being evaluated in August 1942 while the U.S. The original Ordnance Department specifications of 11 September 1941 for the M4 tank allowed for the mounting of numerous weapons including the 3 inch gun. Design and development īefore the United States had battle experience against heavily armored German tanks, the development of a weapon superior to the 75 mm gun was anticipated. By May 1944, it was being combat tested as the T70. ![]() In January 1943, the decision was made to mount the 76 mm on the vehicle that would become the M18. It was not accepted for combat until July 1944. It was also used to arm the M18 Hellcat tank destroyer.Īlthough the gun was tested in early August 1942 and classified on August 17, 1942, it was not until August 1943 that the Ordnance Department developed a mounting for the M4 tank that the tank forces would accept. The 76 mm gun M1 was an American World War II–era tank gun developed by the U.S United States Ordnance Department in 1942 to supplement the 75 mm gun on the basic Medium tank M4.
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