I have begun the preliminary stages of producing a compact electromagnetic rifle (coilgun). I have the mechanics of the ammo clip worked out for 13 or so shots loaded by a side mount bolt. Whats holding me back now is the electronics of the project. Im a civil engineer and have had very limited contact with electric circuits. Anyway, i would ask questions on that if i knew them, and im sure i will have the right ones to ask in time. I do have this question, for anyone who is familiar with coil guns. Why can one not fire repeatedly in a semi-automatic firing mode? If anyone is familiar with this type of weapon, id be very interested in a book or informative website on the issue. BTW, this is a hobby not at all intended for dangerous use.