"The conductive projectile zips along a set of electrically charged parallel rails and out of the barrel at speeds up to Mach 7. "
"current U.S. Navy guns can only reach targets about 13 miles away. The railgun being tested today could reach an enemy 100 miles away. And with current GPS guidance systems it could do so with pinpoint accuracy. The Navy hopes to eventually extend the range beyond 200 miles."
