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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel breakin
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<blockquote data-quote="Dzaw" data-source="post: 144250" data-attributes="member: 7794"><p><strong>Not all moly is the same!</strong></p><p></p><p>Molybdenum disulfide is not chemically neutral, and under such intense pressure and heat, with moisture present (even atmospheric) it can produce sulferic acid. If ever there were a chemical agent that would be bad for even the most corrosion resistant stainless, that's it.</p><p></p><p>Certain high quality manufacturers have attempted, with varying degrees of success (Some high, as I'm told, unfortunately I have no names ;-(... ) to stabelize the moly without harming its effects.</p><p></p><p>Others have tried tungsten disulfide. Even slicker than moly, and it can be applied with very exact thickness. I don't know how it's working out, but it sounds promising.</p><p></p><p>Finally, I still believe that a bore coating is the answer, rather than a bullet coating. I have a propane fired forge and a great deal of abrasives, and so in the near future I will be testing the effects of several different commercially available dry film lubricants and other such treatments to see weather they will offer any resistance to carburization and abrasion. If those tests turn out to be promising, I will run tests by burying tabs of treated and untreated steel in some smokeless powder and lighting it off to see if there's a difference. </p><p></p><p>If I get something that can protect against all 3 tests better than the bare stainless substrate, I'll be sure to test it in a real rifle barrel. I have a ruger #1 in .243 Win that I want to rebarrel when the factory one is done for, so that one is up for the chop</p></blockquote><p></p>
[QUOTE="Dzaw, post: 144250, member: 7794"] [b]Not all moly is the same![/b] Molybdenum disulfide is not chemically neutral, and under such intense pressure and heat, with moisture present (even atmospheric) it can produce sulferic acid. If ever there were a chemical agent that would be bad for even the most corrosion resistant stainless, that's it. Certain high quality manufacturers have attempted, with varying degrees of success (Some high, as I'm told, unfortunately I have no names ;-(... ) to stabelize the moly without harming its effects. Others have tried tungsten disulfide. Even slicker than moly, and it can be applied with very exact thickness. I don't know how it's working out, but it sounds promising. Finally, I still believe that a bore coating is the answer, rather than a bullet coating. I have a propane fired forge and a great deal of abrasives, and so in the near future I will be testing the effects of several different commercially available dry film lubricants and other such treatments to see weather they will offer any resistance to carburization and abrasion. If those tests turn out to be promising, I will run tests by burying tabs of treated and untreated steel in some smokeless powder and lighting it off to see if there's a difference. If I get something that can protect against all 3 tests better than the bare stainless substrate, I'll be sure to test it in a real rifle barrel. I have a ruger #1 in .243 Win that I want to rebarrel when the factory one is done for, so that one is up for the chop [/QUOTE]
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