While in the Navy ROTC program we had an officer in the program for the Rail Gun, added to that here at UT we have a working Rail gun which is used for research.
The Rail Gun is currently being tested by the Navy. Yes, they use Tungsten, it's about 8-12" long, basically a tungsten rod with a pointed end and little fins that are intended to pop out after firing.
Anyways the Navy fired one into the desert a couple miles away, onto a concrete target on the ground. I cant say how successful, it's classified, but let me tell you it puts 155mm howitzer to shame.... and it's just metal, no explosives.
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