It fires a 40-pound metal slug up to 5,600 miles per hour from New York to Philadelphia, slamming into its target with 32 times the force of a "1-ton car being thrust at 100 mph." Railguns aren't sci-fi anymore.
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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/rj4wZc01KLk/the-militarys-shipwrecking-railgun-just-got-really-real
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