User blog comment:Edwardtruong2006/Calc Request: Obliterating a Landkreuzer P. 1000 Ratte/@comment-33067344-20180726222234

I got an average of 810j/cc, for a mid-end.

129198966.40827*810 = 1.04651163e11 Joules or 25.1 tons of TNT, 8-B still.

Looks pretty good otherwise.