I was thinking along the same lines as Jeff above, ....bend the pin?....holy cow, impossible. If you are pulling that hard
that you feel like the pin is bending, you have really done something wrong, or you have a horrible lock. I use 6 penny
finishing nails for my barrel pins and for the trigger pin. You could use a hardened pin, but, do you realize how much that
trigger actually moves on the pin......after all, it's not spinning around it. The trigger pin should be snug in the wood just
like a barrel pin, it should not be loose and able to turn or move when you pull the trigger. If the pin is now loose, I would
go to a bigger pin, drill out the hole in the trigger so that it turns easily on the new pin, and then install that.....Don