It was sitting on a coffee cup while they filmed it. I'm not too impressed if you can shoot inside a house with no back stop. My bow is more powerful than that. They never said what the weight of the projectile was or how fast it could go, or what sort of accuracy you could get out of it. Cool experiment I guess, but practically an air gun would be better. A paint ball gun would do just as much damage (more maybe) and can fire as fast as you can pull the trigger or full auto on some models. Mine would let you choose between single shot, 3 shot burst, 6 shot burst and full auto.

I don't see a rail gun putting a projectile into space unless it is a huge one. And then I don't know how precise it would be. I think a guided rocket would still be your best bet.

Paul