Well, that explains ... something.
Anyway, the story told to me by the gunsmith who did my action job was that the factory installed frame-mounted firing pin was generally fine out of the box and especially when using factory ammo.
But he was installing a lighter (by a little) hammer spring and he knew I was a handloader who favored Federal primers. His belief was that Federals were a little harder than primers used in most factory ammo.
Was he right? Dunno for sure. I didn't do the testing.
Anyway, with the lightened hammer spring and the new firing pin sticking out of the frame just a little bit more than the original - but not far enough to pierce the primers - it goes bang every time.
I trusted him, rest his soul. He's gone now.
