Original U.S. Civil War type Armstrong Inert 12-Pounder Studded Shell Long Pattern Hand Select:Yes a square central hole that

a square central hole that allows the tool to be used as a wrench for turning the cleaning/charging rod while cleaning the bore or drawing a charge

All bear WWII markings and are dated 1945 on the interior of the steel shell

) Some sources state that the tool has “three screwdrivers”

Each segment is stamped "HOTCHKISS"

It was trialled with the British Army in 1944-1945 as replacement for the Sten but it did not start to replace the Sten until 1953

Original U.S. Civil War type Armstrong Inert 12-Pounder Studded Shell Long Pattern Hand Select:Yes a square central hole thatOriginal Item: The most advanced artillery in use during the American Civil War had rifled bores, which gave greatly increased range and accuracy. Since the war occurred just as rifling was being developed for artillery, a host of different rifling schemes were tried. Among the most famous and interesting was the British Armstrong studded shell, which was designed for muzzle loading cannon that had been modified by cutting three deep rifling grooves