Cheese Cannonballs

I saw this thing on Mythbusters the other day, where Kari, Grant and Tori were testing to see if cheese is a decent substitite for cannonballs. The story behind it is that in the 1800's, two South American countries navy's were fighting, and one side ran out of cannonballs. The ship's resourceful capitan ordered for cheese to be used as a substitute, and the myth says it actually worked! When it was tested, a special kind of hard, spanish cheese whose name I can't recall was actually able to peirce through a replica of a ship sail from that era. Wow. Before you know it, nuclear wars will be replaced with salami. "Watch out for the sausage bomb!!! AGGGGGG!!"