One thing you can do is number your mags, and see if it occurs with an individual mag or all of them. That way you can eliminate it as a mag issue. Also use specific ammo. In other words, when you fire the umc ammo it happens, but when you fire gold dots it doesn't. I don't have these issues with my pistols, but I have heard that some can be particular on ammo choice. Just a tip, make sure you are using follow through on your shots, squeeze the trigger back and hold, then release and see if you notice a difference.