D-10 tank gun
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The D-10 is a Soviet 100 mm tank gun developed in late World War II. It originally equipped the SU-100 tank destroyers and was later selected for the T-55 tank, equipping these as late as 1979. On the T-55 the D-10 continues to be in active... Wikipedia
Shell: Fixed QF 100 × 695 mmR
Barrel length: 5.35 m (17 ft 7 in) L/53.5
Breech: horizontal sliding wedge (semi-automatic)
In service: 1944 – present
Mass: 1,438 kg (3,170 lbs)
Maximum firing range: 14,600 m (16,000 yds), or; 16,000 m (17,500 yds)
Muzzle velocity: 1,000 m/s (3,281 ft/s)