zlacker

You can drop sacks of money from low earth orbit that would do just as much damage and be way cheaper.

>>genewi+(OP)
I'll take your word for it. I lose intuition for how far away the moon is and how much delta - V it takes to get back to earth.

I do think the moon has an advantage from a standpoint that the material is already there. You have to "shoot up hill" to stop the gun from getting loaded.