Jim, tommorow I will make one photo of one old hinge pin, that has been replaced and messurements for you to understand, that there is nothing involved in pin wearness besides greese with "dust" and open-close movements.
BTW, don't you know clay shooting guns is allways remain in better condition, than hunting ones, though clay guns shoot much more rounds. What d'you think why is that?

Ted, come back here when you'll get smarter and not so ugly.

Geno.