Well, ever since the Myth Busters when they shot that tank to show it wouldn't blow up... I wondered... How much gun does it take to rip a hole in a tank.
Thought I'd Share: http://www.scubatoys.com/store/joelarry/tankbullets.asp
Thought I'd Share: http://www.scubatoys.com/store/joelarry/tankbullets.asp