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Custom Barrel Care at 17X By Jim See
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<blockquote data-quote="MontanaRifleman" data-source="post: 341720" data-attributes="member: 11717"><p>Walt,</p><p> </p><p>Here's part of an article found on Dan Lija's web site that lines up with what Jim said about carbon and barrel break-in...</p><p> </p><p></p><p> </p><p>I can't explain in detail what goes in the bore during the break-in process, but I have seen first hand the evidence of greatly reduced fouling. Maybe I can draw an analogy. Not sure if it's an accurate analogy but it makes sense to me. If you take a sharp knife and skin out a deer with it, it will get dull. The hide and flesh are nowhere near the hardness of the steel but they do dull the sharp edge of the steel. Maybe this is what is going on? Maybe the sharp edges of the steel and especially the edges of the rifling are being "dulled" by the velocity and pressure of bullet. As Lilja points out, some bores are too rough to ever be completely broke in and I have a coupl of those. They did show a reduction in fouling, but still foul a good bit. They are easier to clean though than the first time I cleaned them.</p><p> </p><p>On regular cleanig... it's true that cleaning will usually affect a rifles POI right after the cleaning for maybe a few shots until it settles in again. But I can assure you, that with my rifles, when they get fouled to a certain point, which is usually around 50-70 rounds, the groups start opening up a whole lot. After a good cleaning and a few fouler shots, they settle back into their .5 MOA accuracy. </p><p> </p><p>Mark</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 341720, member: 11717"] Walt, Here's part of an article found on Dan Lija's web site that lines up with what Jim said about carbon and barrel break-in... I can't explain in detail what goes in the bore during the break-in process, but I have seen first hand the evidence of greatly reduced fouling. Maybe I can draw an analogy. Not sure if it's an accurate analogy but it makes sense to me. If you take a sharp knife and skin out a deer with it, it will get dull. The hide and flesh are nowhere near the hardness of the steel but they do dull the sharp edge of the steel. Maybe this is what is going on? Maybe the sharp edges of the steel and especially the edges of the rifling are being "dulled" by the velocity and pressure of bullet. As Lilja points out, some bores are too rough to ever be completely broke in and I have a coupl of those. They did show a reduction in fouling, but still foul a good bit. They are easier to clean though than the first time I cleaned them. On regular cleanig... it's true that cleaning will usually affect a rifles POI right after the cleaning for maybe a few shots until it settles in again. But I can assure you, that with my rifles, when they get fouled to a certain point, which is usually around 50-70 rounds, the groups start opening up a whole lot. After a good cleaning and a few fouler shots, they settle back into their .5 MOA accuracy. Mark [/QUOTE]
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