Guys,
came across last week this info - A44 prototype.

This was the partly realized project of 1941- "SovietHeavy Tank A-44".

Designed Mass - 25-29 tons.
75 mm -armmour in front and turret, 60 mm armour from the sides.
Main gun - 76,2 mm ZIS-5 or 57 mm ZIS-4 (latter one with two machine guns in the turret).
Two DTmachine guns in the front(it was also intended to install two firethrowing guns instead)

Gun wasto make 100 shots and 6000 rounds for machine guns.