I got to take my new 20 rounder out over the weekend, I was chucking the australian cheap .308 ammo through it. I myself never had a malfunction (120 rounds), although I handed the rifle to my 12 year old son and he had two jams, the rifle fired, ejected the shell and did not put the next round into the chamber, had to drop the mag and eject the shell out of the bottom of the gun. I am thinking he was flintching so bad that this may have caused this, what do you guys think?