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http://www.livescience.com/technolog...ic-record.html
http://www.livescience.com/technolog...ic-record.html
The railgun, as it is called, will ultimately fire a projectile more than 230 miles (370 kilometers) with a muzzle velocity seven times the speed of sound (Mach 7) and a velocity of Mach 5 at impact.
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