Test of Futuristic Railgun A Success: U.S. Navy - Defense NewsWASHINGTON - The U.S. Navy announced a successful test Dec. 10 of an electromagnetic cannon capable of firing a projectile 110 nautical miles at five times the speed of sound. The U.S. Navy's Office of Naval Research Electromagnetic Railgun located at the Naval Surface Warfare Center Dahlgren Division fired a world-record setting 33 megajoule shot on Dec. 10, breaking the previous record establish
