Hmmmmm.
There are a FEW folks here that shoot 8", bowling ball, and 10" that I'm aware of.
That should hold about 2 cu ft of concrete. Say 8" thick walls - might tip the scale at about 1,500 lb or maybe much more.
Sure, I think I could market that to most any construction company for taking down a building in one fell swoop!
A few minor problems with the shear scale of it, but SURE WOULD BE FUN!