QUOTE: Never fired full auto, always dreamed to though.
Join the Army and get some on hand experience in Iraq. It is quite an experience to fire the automatics. I had the pleasure to fire the helicopter mounted crew served gatlin gun on a daily/nightly basis during the Vietnam conflict. Similar guns are fired on the site below.
The shoot is usually held twice a year: once in the fall and once in the spring. I'm fortunate enough to live about 1 1/2 hours away from it so I've been a couple time. You can rent a full-auto there but it's spendy. The only time I ever rented one was a M1928 Thompson and is was $55 for 50 rounds. If memory serves, it was $75 for 25 rounds from a M2 and $200 for the flamethrower.