Schwerer Gustav Dora railway cannon
Caliber:800 mm(80 cm)
Weight:1350 tonnes
Lenght:
Widht:
Height:
Barrel lenght:
Crew:250 assemble the gun 2500 to lay track and 2 Flak battalions
Shells:
AP 7.1 tonnes
High Explosive 4.8 tonnes
Music: AC DC- Big Gun
Pictures from Google
Datas from Wikipedia