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Had a vintage .22 firing pin snap clean in half on me yesterday
It was an old Marlin 60 I was cleaning for a customer. The pin just sheared right at the neck when I was checking the action. I had to make a new one from scratch using some O1 tool steel I keep on hand for small parts. Took about two hours with the lathe and files to get the angles and hardness just right. Has anyone else had luck with a specific type of steel for these older rimfire pins? I'm wondering if 4140 might be better for the shock.
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ray_king13d ago
Ever try heat treating the O1 after you shape it? I've found that helps a lot with the shock resistance on those old pins. What tempering temp do you usually run?
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