I just thought about my post...I guess I should say the firing pin doesnt protrude AT ALL...It still free floats just fine and like it has forever. But when the firing pin is at the forward most position, its probably 1/16th of an inch if I had to guess of hand. Maybe more or a little less...
When it first done it, my first thought was my firing pin had broken or the tip had chipped off. I was just notified by my brother that he took his trigger group out of his Norinco and the rifle worked flawless. He done some swapping around with parts like firing pins, bolts, and other stuff and its definately not firing the pin hard enough to sufficently hit the primer.
He first swapped our trigger groups, my rifle worked fine with his trigger and his rifle done the mis firing mine was doing with my trigger in his rifle.
He then swapped our firing pins only with original trigger in my rifle, same result with misfires.
SO then he swapped our entire bolt assembly, same results.
Swapped trigger assemblies again, my rifle worked flawless and every round fired. His rifle adopted my problems...So its definately the hammer spring.