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Rifles, Reloading, Optics, Equipment
Reloading
Brass problems
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<blockquote data-quote="MagnumManiac" data-source="post: 1519446" data-attributes="member: 10755"><p>That is easy to diagnose, a chip or two has been trapped in one or more of the reamer flutes and marred the chamber surface. These are often not more than .0003"-.001" deep.</p><p>Polishing the chamber will reduce it, but it won't remove them.</p><p>The only way to remove them is to set back one thread and re-cut the chamber.</p><p>I have the same on a Kimber 300WM about 1/32" down from the shoulder/body juncture.</p><p>I polished it and reduced the markings, but it is still imprinted on the fired cases yet you cannot feel it with a fingernail.</p><p>My custom 505 Gibbs also had a faint chip mark, as long as it doesn't cut/imprint the case, it's nothing to worry about.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1519446, member: 10755"] That is easy to diagnose, a chip or two has been trapped in one or more of the reamer flutes and marred the chamber surface. These are often not more than .0003”-.001” deep. Polishing the chamber will reduce it, but it won’t remove them. The only way to remove them is to set back one thread and re-cut the chamber. I have the same on a Kimber 300WM about 1/32” down from the shoulder/body juncture. I polished it and reduced the markings, but it is still imprinted on the fired cases yet you cannot feel it with a fingernail. My custom 505 Gibbs also had a faint chip mark, as long as it doesn’t cut/imprint the case, it’s nothing to worry about. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Brass problems
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