Yep went through a dozen mags. All was fine Intill my dad loaded spent brass in for practise clearing jams and malfunctions. He had me draw fire double taps and move for cover while firing. Then it interesting with the spent brass to clear. He is a great teacher. He was in a military spec op group then went through the Ohio state Patrole academy and had some of the highest driving and shooting scores they ever had. He really pushes you for shooting perfection.