1959, Fort Leonard wood Mo. Qualified all the way out to 600 yards. Later qualified on the M1 and M2 carbine, 50 and 30 cal Browning and even the 3.5 rocket launcher. Got to RVN the first time in 1966, they handed me a M-14 with a selector switch. I was able to break it down only because of my familiarity with the M1 Garand. Carried that M14 a month before I got a chance to fire it, damn thing had a broken firing pin. By the way, when folks talk about the M14 being hard to control in full auto, they are not bird turding.