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Posted: 8/10/2006 3:40:02 PM EDT
| So I have a new stainless steel barrel and from what I have read, the proper procedural break in should be 1 shot, clean, 1 shot, clean,...and this is done to "polish" the bore. The question I have here is would it be a bad idea to use a Moly-coated bullet for this procedure? I was thinking that since one of the qualities of the moly bullets is they make the bore easier to clean than a copper jacketed does, why not let this quality be the first thing to touch the bore? Thanks |
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Actually, break-in is not so much to polish the bore as it is to polish the throat. Here is the reasoning... The bore will already be relatively smooth from the button rifling process. The throat, however, will have tool marks ACROSS the direction of bullet travel. You want to lay theses down and make it smooth. During the first few shots, the tool marks in the throat are very likely to pull copper from the jacket, even with the moly. By cleaning at each shot for 5 shots or so, you are taking this copper back OUT of the throat so it does not build up. If it builds up, the tool marks are basically protected from the next bullet and you will end up with a barrel that copper fouls much easier in the future because you will not be able to get it as clean. Each succeeding break-in shot will wear down those tool marks and the throat will take less and less jacket metal with each shoot/clean cycle. |
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Your cleaning patches will let you know. If you are cleaning with a good copper remover as you need to be, the amount of copper removed from a single shot will reduce drastically when the throat has broken in. No bore brush during break-in, just a good copper solvent and patch. Clean each time until NO MORE copper is coming out of the barrel. Then fire the next shot. Some barrels will always copper foul, but good ones will not, once broken in. |
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