I replaced a firing pin on a Remington 121 22cal rifle. The tip was fat and would not set off the round, so I reshaped it, now the round fires, I could file the tip, when I got the pin, do I have to case harden it now?
I also had a blade firing pin for an early H&R sidekick revolver pistol, the blade is part of the hammer, it looks like it may be forced or soldered in place, it would not fire, the blade was fat on the end. I could not file the blade, it was hard, I had to use a diamond grinder to reshape the blade, now it fires, do I have to case harden the blade now?
I watch Bob on the video on heat treat and case hardening and now I am more lost than before.
On the replacement firing pin I would harden it as they usually come soft for fitting. After you harden it, it will last soooo much longer. As far as the H&R the whole hammer is hard as well as the firing pin which is part of the hammer. You don’t have to re-harden the tip as all it has to do is crush brass. As far as, do you need to case harden the rifle firing pin you replaced, that would depend on what type of metal it is made out of. You DON’T want to case harden oil hardening steel. Watch Bob’s tape again and I know he went over what you need to do to find out what kind of steel you have in front of you.
