Thread:Captain rudder guy Kevin1/@comment-12494172-20150725103513/@comment-27797576-20150728022810

Oi, even in a vacuum, a railgun won't accelerate a shell to relativistic speeds in an instant. Far from it, actually. A normal railgun on earth will still accelerate at roughly the same rate in a vacuum. You may have slightly increased speed(like Mach 10 to Mach 12-13), but you still need MUCH more power input to get a round to sub-light speeds