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Rifles, Reloading, Optics, Equipment
Gunsmithing
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<blockquote data-quote="J E Custom" data-source="post: 1425328" data-attributes="member: 2736"><p>Yes. And often because of the poor quality of the countersink. When I do I go in these steps.</p><p></p><p>First I inspect the countersink to see if it is uniform. if it looks ok I will do a preliminary center to center check, Then when I get ready to do a final straightness check, I face each end off square and seat the centers in the bore using the tops of the lands to be as accurate as possible. This will give me very good readings, But voids the manufacturer's warranty Because it removes his barrel ID. so you must be sure that you can use it before this step.</p><p></p><p>I do this to determine the need for re contouring for straightness and uniform wall thickness. </p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1425328, member: 2736"] Yes. And often because of the poor quality of the countersink. When I do I go in these steps. First I inspect the countersink to see if it is uniform. if it looks ok I will do a preliminary center to center check, Then when I get ready to do a final straightness check, I face each end off square and seat the centers in the bore using the tops of the lands to be as accurate as possible. This will give me very good readings, But voids the manufacturer's warranty Because it removes his barrel ID. so you must be sure that you can use it before this step. I do this to determine the need for re contouring for straightness and uniform wall thickness. J E CUSTOM [/QUOTE]
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