The only full autos I have ever shot, was my first, Ontario Ruger 10-22. It went full auto on me - rather fun, especially for close range ground hogs - minimum of 3 hits per "hog" - always a head ground pig. Hard on the budget, though. Funny, I cleaned the rifle's action and it stopped doing that.

The second and third were at Thompson Mountain range in Southern BC. an M2 Carbine and a 'modified' Winchester M100 in .308 someone had "played" with, those back in the 70's.