What I find endlessly fascinating about firearms is accuracy. What you have in your hand in a gun is a pipe, with a nail in the back of it. Inside that pipe is an explosive in a stamped (one of the less-accurate manufacturing processes) brass casing holding a usually cast (another crappy process) chunk of lead that is sometimes wrapped in copper. Then you take that explosive and are able to consistently propel that chunk of lead at supersonic speeds to 300 yards and beyond with enough force to knock over large game or in the right situation blow a hole through an engine block. Oh and you can do this repeatedly and land 100 (or 1000) more hunks of lead in an area smaller than the palm of your hand, at the same distance.