T-34-100 – OKB #9 Factory #183 built one example armed with a 100mm ZIS-100. Attempts were also made to mount a 100mm D-10-34 in a T-34-85 turret and a prototype T-44 turret. Due to the added weight of the new gun, the bow machine gunner and machine gun were removed. These models were not accepted into production because of damage caused to the turret ring when firing along with unacceptable recoil. A new gun, the LB-100, was then fitted – this had much lower recoil and passed all tests, however by then the war was all but over, and the T-44 was better suited than the old T-34 chassis