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Rifles, Reloading, Optics, Equipment
Equipment Discussions
Barrel cleaning
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<blockquote data-quote="SWHandldr" data-source="post: 2771693" data-attributes="member: 114858"><p>Ultimate test is to shoot it.</p><p></p><p>We can tell you how our firearms might perform; I doubt anyone can say for sure how your rifle will perform. My WAG is with some copper still showing, it may be more accurate than before but not for long. </p><p></p><p>Copper deposits tend to collect more copper as bullets pass over them. So it may not be as accurate, for as many rounds, as when cleaned to bare steel. And without pictures thru your borescope, what 'a fair bit' of copper means to you is likely different for someone else. </p><p></p><p>Were it my rifle, I'd clean to bare metal & look at the barrel where the copper was for roughness that may be holding onto copper. If found, some judicious work with JB Bore Pase on a jagged patch - checking with the borescope - would be my choice. </p><p></p><p>Or review your cleaning methods. Are you spending more time & effort on the throat and near the muzzle, not as much in the middle? Again, guessing on my part: Yes, or the barrel surface may be holding onto copper in that section. One or the other. </p><p></p><p>I tend to clean non-Magnum rifles every 50-100 rounds, not necessarily every time I shoot them. When I do clean, it's to bare metal, other than a quick BoreSnake packing up at the range or back in camp on a hunt. It may take five or so shots - on my barrels - to 'settle in' after a full clean but IME, they shoot better for longer than if I leave copper in the barrel. </p><p></p><p>Also, pay particular attention to a carbon ring at the end of the chamber. In a tight-necked rifle, a ring can interfere with bullet release leading to excessive pressure. A brass brush with solvent, turned in this area by hand or with a drill on low speed (30-60 rpm) removes these rings. </p><p></p><p>Hope this helps.</p></blockquote><p></p>
[QUOTE="SWHandldr, post: 2771693, member: 114858"] Ultimate test is to shoot it. We can tell you how our firearms might perform; I doubt anyone can say for sure how your rifle will perform. My WAG is with some copper still showing, it may be more accurate than before but not for long. Copper deposits tend to collect more copper as bullets pass over them. So it may not be as accurate, for as many rounds, as when cleaned to bare steel. And without pictures thru your borescope, what 'a fair bit' of copper means to you is likely different for someone else. Were it my rifle, I'd clean to bare metal & look at the barrel where the copper was for roughness that may be holding onto copper. If found, some judicious work with JB Bore Pase on a jagged patch - checking with the borescope - would be my choice. Or review your cleaning methods. Are you spending more time & effort on the throat and near the muzzle, not as much in the middle? Again, guessing on my part: Yes, or the barrel surface may be holding onto copper in that section. One or the other. I tend to clean non-Magnum rifles every 50-100 rounds, not necessarily every time I shoot them. When I do clean, it's to bare metal, other than a quick BoreSnake packing up at the range or back in camp on a hunt. It may take five or so shots - on my barrels - to 'settle in' after a full clean but IME, they shoot better for longer than if I leave copper in the barrel. Also, pay particular attention to a carbon ring at the end of the chamber. In a tight-necked rifle, a ring can interfere with bullet release leading to excessive pressure. A brass brush with solvent, turned in this area by hand or with a drill on low speed (30-60 rpm) removes these rings. Hope this helps. [/QUOTE]
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