Object 257 Heavy Tank

The Object 257 was a precursor to the Object 260. The gun had a rate of fire of 7-8 rounds per minute.
Variants:
1.
Name: Object 257
Type: Heavy Tank
Origin: Soviet Union
Year: 1945
Produced: 0

Length: ???
Width: ???
Height: ???
Weight: 23000 Kilograms
Speed: ???

Crew: ???

Primary Armament:
-122 mm BL-13-1
Secondary Armament:
- ???

Gun Flexibility: °

Armor:
-Hull
150 mm Upper Front
150 mm Upper Side 85 mm Lower Side
30 mm Bottom
-Turret
180 mm Side

Sources:
http://tankarchives.blogspot.ca/2016/06/object-257-first-is-7.html