It will obliterate a target 100 miles away through sheer power using a bullet fired at eight times the speed of sound. That is, if everything goes according to plan. This supergun has been described as the most powerful in the world after tests at a U.S. Navy firing range.

Instead of relying on an explosive propellant such as gunpowder, the railgun uses a giant surge of electrical energy to fire the bullet at speeds approaching Mach 8.

A shot fired by the electromagnetic railgun at the Naval Surface Warfare Centre in Dahlgren, Virginia, generated 33 megajoules of force out of the barrel, a world record for muzzle energy and more than three times the previous record. A single megajoule is roughly equivalent to a one-ton car travelling at 100mph. The impact of the projectile hitting a target would be 33 times that force. The bullet would take just minutes to fire over 100 miles and would hit with pinpoint accuracy with a velocity that’s impossible in conventional guns. The hi-tech cannon fires a 20lb bullet or missile at a speed that is impossible in conventional guns. The makers claim it has pinpoint accuracy.