several years ago I was with a group of guys out shooting prairie dogs. One guy brought some tannerite. He put about #1 in a box, placed it on top of a p-dog mound, put a piece of 1/2" X 12" X 24" aluminum on top of the box and then put an empty pony keg on top of the aluminum. Shot it.
We all were standing about 150 yards away, which was almost not far enough. Blew a 3' deep hole in the ground, launched the empty keg a good 100 yards high and when we found the aluminum plate, it was curved on one side and had the indention of the bottom of the keg on the other side.
Was impressive.
