I remember watching an episode of Myth Busters where they put a block of ballistic gel into a swimming pool and shot at it from everything between a Civil War p

I remember watching an episode of Myth Busters where they put a block of ballistic gel into a swimming pool and shot at it from everything between a Civil War pistol to a .50cal Very cool to learn that the slow the FPS of the round, the further into the water it will penetrate.