If an affordable, rifle-sized railgun was developed, would you buy one? I, for one, would get several. With a theoretical maximum projectile velocity of the speed of light, they'd be awfully effctive. Be a little hard to construct a target range, but if that obstacle was removed, it'd be awfully fun to shoot, I wager. Probably be nigh-on useless for hunting (vaporized deer just aren't as tasty), and would be a danger to aircraft and the International Space Station if accidentally discharged. Not to mention the recoil, as recoil in ft-lb is (projectile mass) * (prejectile velocity squared), and 180 grains times the speed of light squared is the approximate amount of force gentrated by a 180-grain pellet of uranium that gets involved in a nuclear blast.