We have heard of Dum Dum bullets, but this is a 12pdr solid shot cannon ball that was waiting for me when I got home from Marietta. It was in a group (not mine!) that a bomb squad out East blew up for "our safety." These are the frags showing it to be a solid 12pdr, not an explosive shell.
I know I personally feel safer knowing these geniuses are here for us. I thought this level of stupidity was an urban myth but now I have proof (which I will sell to the highest bidder soon!)