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Military Firearm Restoration Corner

case hardening


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As far as color case hardening, good luck finding anyone anymore. Doug Turnbull used to do it but stopped. Warpage rate was too high.

 

To smooth up your action polish it.

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A feller in Amarillo does it,but said he didn't like the idea of doing a high pressure caliber action because of the heat involved.He knows Mausers I guess,because he said a low pressure shell like 7x57,6.5X55,OR .257 Roberts in a '98 action might be ok,and that's the only action he'd Case harden.If it's that iffy,I don't want my head behind the bolt even if it is purty,not my head,the gun.Jerry

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A feller in Amarillo does it,but said he didn't like the idea of doing a high pressure caliber action because of the heat involved.He knows Mausers I guess,because he said a low pressure shell like 7x57,6.5X55,OR .257 Roberts in a '98 action might be ok,and that's the only action he'd Case harden.If it's that iffy,I don't want my head behind the bolt even if it is purty,not my head,the gun.Jerry

5002[/snapback]

 

If you're worried, then how about the bases and scope rings. I've seen that done where it looks really good.

 

steve

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I'm confused. I understand the process of color case hardening and the reason for it. Your putting a very hard wearable surface on a mild steel. The process could lend itself to warpage of an action but what would make it anymore dangerous than a case hardened or carborized action.

 

Please forgive my ignorance,

rwims

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Guest MorgansBoss

I'm hoping someone with more insight will reply to rwims' question, but I'm guessing it has to do with the way color-cased parts are quenched. The process involves heating the parts to a specific temperature while sealed inside a crucible filled with carbon (the formula is as varied as the users - bone meal, charcoal, etc...). After a specific period of time has elapsed the entire mess is dumped into a tank of water with air circulating through it. Its the bubbles with their varying temperature that impart the colors. This is a thumb nail description of the process but hopefully it gets the point across. Thin parts like lock plates on side-lock doubles or M/L's are typically screwed to a sturdy block or plate to prevent warping. The thin portions on the sides of a mauser action would be subject to such problems.

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