Ha - OK. Checked on this. I was somewhat wrong...
What I was told is pretty complicated and going into it all will take too much time and brainpower right now.
But a quick summary:
Short cross pins (Boss, Grants, H&H-style sidelocks, etc) are typically CChardened in place. This is done to protect the action. But these pins should be annealed or replaced afterwards. Geno is right - unlike the action, these pins are made from high carbon steel and CCH can make them exceptionally brittle. If they are not addressed, they can shatter when the gun is fired.
Purdeys have long pins. These pins are not left in place or CChardened. They are blued, just like the pins on most hammerguns.
And the pin is supposed to take the wear. The HOOK cannot be replaced, so you want to do minimal work on it when you put the gun back on the face.
I think that's it.
OWD
BTW: welding up the hook is not the proper way to put a quality double back on the face. Replacing the hinge pin is. Welding is how you deal with fixed cross pins, or a shortcut.
Last edited by obsessed-with-doubles; 08/29/11 06:17 PM.
