Railguns have some serious power and while we are used to seeing them in the movies, the government is always busy testing out new ways to use them. The U.S. Navy just fired a metal projectile that destroyed a target a hundred miles away.
The railgun’s operation is pretty straightforward. It uses an electrical charge measured in megajoules as a propellant, which allows the large ordnance to be fired and detonated quickly. The recent test struck the distant target in a matter of minutes.