SuperGun

Super Gun is been in developing stage by U.S. based Scientists which is capable of firing at a distance of 160 km distance at a speed of 8 MACH ( which is 8 time the speed of sound)approx. comes around 1195 * 8 = 9560 km/hr.It takes 2 or 3 minutes to reach 160 km that is the target.Presently there is a Gun which can attack a target of 20km distance used by U.S. warships.Instead of using gun powder it uses electric energy to get the force.It produces 33 mega joules of force out of the barrel

A single mega joule is roughly equivalent to a one-tonne car traveling at 160kmph. The impact of the projectile hitting a target would be 33 times that force.But it will be at least another five years — possibly ten — before the weapon is ready to be used on ships, scientists said.
They hoped that by 2025, the technology will almost double the power of the gun.
So the gaming facts become science facts.