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Rifles, Reloading, Optics, Equipment
Reloading
Neck Tension Effect on Accuracy
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<blockquote data-quote="bigedp51" data-source="post: 1253616" data-attributes="member: 28965"><p>Well forgive me for reading the OP first post again and re-reading all the other posting going off in the wrong direction.</p><p></p><p>The OP was getting the best accuracy when his "full length resized" cases fit the chamber like a rat turd in a violin case.</p><p></p><p>And his groups opened up when he neck sized the cases using a bushing die.</p><p></p><p>The reason I say this is because I have a Forster bushing bump neck sizing die and it produces more neck runout than any other die I own.</p><p></p><p><u><u><u><u><u><u><u><u><a href="http://bulletin.accurateshooter.com/2016/11/advanced-reloading-checking-the-geometry-of-neck-bushings/" target="_blank">Advanced Reloading — Checking the Geometry of Neck Bushings « Daily Bulletin</a></u></u></u></u></u></u></u></u></p><p><u><u></u></u></p><p><u><u></u></u>Not only can the bushing itself induce neck runout, if the neck diameter of the case is reduced .005 or more it also can induce neck runout. This is why it is recommended to size the neck in two steps when reducing the case neck .005 or more. </p><p></p><p>"IF" the OP checks his neck and bullet runout with both sizing methods and posts the results we might get to the bottom of his problem.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1253616, member: 28965"] Well forgive me for reading the OP first post again and re-reading all the other posting going off in the wrong direction. The OP was getting the best accuracy when his "full length resized" cases fit the chamber like a rat turd in a violin case. And his groups opened up when he neck sized the cases using a bushing die. The reason I say this is because I have a Forster bushing bump neck sizing die and it produces more neck runout than any other die I own. [U][U][U][U][U][U][U][U][URL="http://bulletin.accurateshooter.com/2016/11/advanced-reloading-checking-the-geometry-of-neck-bushings/"]Advanced Reloading — Checking the Geometry of Neck Bushings « Daily Bulletin[/URL][/U][/U][/U][/U][/U][/U] [/U][/U]Not only can the bushing itself induce neck runout, if the neck diameter of the case is reduced .005 or more it also can induce neck runout. This is why it is recommended to size the neck in two steps when reducing the case neck .005 or more. "IF" the OP checks his neck and bullet runout with both sizing methods and posts the results we might get to the bottom of his problem. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck Tension Effect on Accuracy
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