The U.S. Navy railgun is currently being developed at Naval Surface Warfare Center Dahlgren Division, Virginia, and is moving forward toward deployment aboard Zumwalt-class destroyers.
The railgun uses electromagnetic pulses, as opposed to gunpowder, to fire a projectile at speeds exceeding Mach 6.
The speed at which these rounds reach makes it unnecessary to have high-explosive warheads, and the kinetic energy of the round is enough to make them deadly upon impact.
The Navy hopes to improve on its current railgun system so that it can reach distances greater than 100 miles, and can be used on both surface and airborne targets.
Check out the electromagnetic railgun: