The Object 730 Version 4 was intended as another SPG project developed on the basis of the T-10 (Object 730) tank by December 18, 1952. At the same time, the concept project featured the Object 268 designation. The project allowed for a gun to be mounted in a closed stationary cabin placed in the rear of the hull. The project was canceled because a complex modification of the Object 730 hull was required.
Time for the successive autoreloading of each shell into the magazine.
The technical characteristics shown are for the Siege mode
Characteristics are specified for a vehicle with crew members trained to 100%.