What was the best live fire experience you ever had? Mine was while aboard a destroyer. I was standing lookout when they test fired one of the Vulcan Phalanx mounts (20mm). Sounded like someone red-lining a big two stroke without a muffler on it. The speed with which the barrel cluster spun indicated an awesome fire rate (something like up to 3,000 rounds per minute). A close second was the semi auto 5" 54s firing 2 rounds per second from each of the two gun mounts at once. The cartridges for those guns weighed about 80 lbs a piece. I used to have to help hod those in from the spare magazine compartment when the internal magazines went low. Military weapons fire can be truly inspiring. It's amazing that airplanes (puff the magic dragon and spectre) were equipped similarly.