In April-May of 1943, the SU-85B tank destroyer designed by the Gorky Automobile Plant underwent trials. The vehicle was a modernization of the SU-85A and featured the artillery LB-2 gun, 160-hp engine, and SU-76M chassis. The cabin, drive wheels, and spare parts kits were redesigned. Only one prototype was built.
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%.