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Trajectory and pattern of US 3-inch (76 mm) Shrapnel shell of WWI era. The other factor was the trajectory. The shrapnel bullets were typically lethal for about 300 yards (270 m) from normal field guns after bursting and over 400 yards (370 m) from heavy field guns.
The 3-inch rifle could hurl a shell 4,180 yd (3,822 m) at 16° elevation. [14] Unlike a smoothbore cannon, the 3-inch rifle's projectile retained two-thirds of its muzzle velocity at 1,500 yd (1,372 m) – or 839 ft/s (256 m/s) – so that its rifled projectile was invisible in flight.
The gun fired 3 inches (76 mm) steel, shrapnel, or explosive shells that weighed 15 pounds (6.8 kg). [2] The use of nickel steel construction meant that the M1902 could fire a heavier shell at a higher muzzle velocity and greater accuracy (due to tighter rifling) than any other field gun of American origin to that point. [ 3 ]
76 mm artillery includes 3 Inch and Russian 30 line calibre weapons, which are actually 76.2 mm. They were typically called 12-pounders or 13-pounders by the British based on the weight of the shell. They were typically called 12-pounders or 13-pounders by the British based on the weight of the shell.
The US Army wished to examine and adopt a split-trail carriage, which would allow a higher elevation for indirect fire and dropping shells into trenches. [2] This carriage type was used on the prototype 3-inch model of 1913, which was later designated the 3-inch gun M1916 after a major carriage redesign, prompted by field trials of the M1913.
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In 1853 these were combined into a single fuze with dual channels, 2 inches long for howitzers and common shell, 1 inch for shrapnel. [5] The holes were sealed with clay, with could be spiked through before loading to select the necesary time delay. There were white and black painted groups of holes for odd and even tenths.
Grapeshot used fewer but larger projectiles than were contained within canister or shrapnel shells. [1] Case shot broadly describes any multi-projectile artillery ammunition. The canister round is known as a case, so canister was sometimes called case shot and the term has confusingly become generic for grapeshot and shrapnel shells. [1]