122mm D-25T rifled gun seen on IS-2 heavy tank on display in Volgograd.
Source: Mike1979 Russia -
© CC BY-SA 3.0
Line diagram of 122mm D-25TA gun in T-10 turret as seen from the side and from the top.
Source: www.btvt.info -
© Copyright lies with original owner
The IS-2 was the first heavy tank to mount the D-25T.
The ISU-122S is armed with the D-25S, which is derived from the D-25T.
The IS-4 was armed with the D-25T main gun. It was to be fitted with a different 100mm gun, but that combination proved troublesome during prototype testing.
The T-10 is armed with the D-25TA gun. This is fitted with an air pressure bore evacuator and modified breech block.
The T-10A and T-10B are fitted with the D-25TS main gun. These are fitted with a stabilizer system. Both also use a loading tray with electromechanical rammer to improve rate of fire.
The 122mm D-25T is derived from the 122m A-19 towed howitzer. It fires the same range of two piece ammunition.
The 122mm M-62T2 was developed as a successor to the D-25T. It has a similar caliber, but fires newer ammunition types at higher velocities and flatter trajectories.
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