GimpLizard: Also a real possibility. They built a proper coil gun at Sandia Labs years ago, which one report claimed could put small satellites in orbit, if they didn't burn up on the way up. Unfortunately, it was powered by a very large capacitor bank, driving multiple sequential coils, think of oversized capacitor-discharge switch machine power supplies. They forgot to install a current limiter in the charging circuit. The first time they tried to charge it they blew breakers across the facility, and damaged a lot of equipment with the spikes and surges.
Coil guns themselves don't blow up, but the power supplies certainly can! Of course, the one this topic is about won't hurt anyone, but a larger version might do some damage.
