Navy Rail Gun demo

Everyone must have seen the pics of the navy railgun but here is a discovery channel show that gets to see a bit more of it..

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Up until they were retired, the battleship was one of the most feared warships because of their ability to strike a target from 30 miles away pretty accurately. Imagine now how powerful a destroyer will be with a gun that can launch a round 400 miles away. If nothing else, the science and potential is amazing.