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Rifles, Reloading, Optics, Equipment
Reloading
28 Nosler runout issues
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<blockquote data-quote="bigedp51" data-source="post: 1891253" data-attributes="member: 28965"><p><span style="font-size: 22px"><strong>Tech Line & Tips (FAQs)</strong></span></p><p><span style="font-size: 15px"><a href="https://www.redding-reloading.com/tech-line-a-tips-faqs/146-concentricity-problems" target="_blank">https://www.redding-reloading.com/tech-line-a-tips-faqs/146-concentricity-problems</a></span></p><p><span style="font-size: 22px"><strong><a href="https://www.redding-reloading.com/tech-line-a-tips-faqs/146-concentricity-problems" target="_blank">Concentricity Problems</a></strong></span></p><p><strong>a.k.a Neck Runout With Bottleneck Cases</strong></p><p></p><p>We have conducted many tests over the years on the various factors contributing to concentricity problems with bottleneck cases. We have repeatedly found a definite correlation between the uniformity of the brass (or lack of it) and the resulting concentricity of the neck to the body of the case.</p><p></p><p>An interesting experiment also revealed that neck turning of brass that was intentionally sorted as non-uniform, showed little or no concentricity improvement when used in standard S.A.A.M.I. spec chambers. Conversely brass that was sorted and selected for uniformity remained uniform and concentric with or without a neck turning operation.</p><p></p><p>Another interesting observation can be found in the examination of fired cases that have crooked necks "as fired" right out of the chamber. Usually the chamber is being blamed for the problem.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1891253, member: 28965"] [SIZE=6][B]Tech Line & Tips (FAQs)[/B][/SIZE] [SIZE=4][URL]https://www.redding-reloading.com/tech-line-a-tips-faqs/146-concentricity-problems[/URL][/SIZE] [SIZE=6][B][URL='https://www.redding-reloading.com/tech-line-a-tips-faqs/146-concentricity-problems']Concentricity Problems[/URL][/B][/SIZE] [B]a.k.a Neck Runout With Bottleneck Cases[/B] We have conducted many tests over the years on the various factors contributing to concentricity problems with bottleneck cases. We have repeatedly found a definite correlation between the uniformity of the brass (or lack of it) and the resulting concentricity of the neck to the body of the case. An interesting experiment also revealed that neck turning of brass that was intentionally sorted as non-uniform, showed little or no concentricity improvement when used in standard S.A.A.M.I. spec chambers. Conversely brass that was sorted and selected for uniformity remained uniform and concentric with or without a neck turning operation. Another interesting observation can be found in the examination of fired cases that have crooked necks "as fired" right out of the chamber. Usually the chamber is being blamed for the problem. [/QUOTE]
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28 Nosler runout issues
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