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Rifles, Reloading, Optics, Equipment
Reloading
Neck Concentricity Help
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<blockquote data-quote="Winchester 69" data-source="post: 221184" data-attributes="member: 8037"><p>How does the collet die know for which gun it is sizing the brass? </p><p></p><p>Actually, the collet die is sizing to fit the brass to a bullet, not a chamber. Use it for both guns and see what your results are. </p><p></p><p>Also, you can measure the run-out on the sizing stem for the RCBS neck-sizing die. It may benefit from straightening. Further, if you can leave the sizing stem/expander ball loose in the die, it will find its own center rather than deforming the brass. </p><p></p><p>You have several options. </p><p>.</p></blockquote><p></p>
[QUOTE="Winchester 69, post: 221184, member: 8037"] How does the collet die know for which gun it is sizing the brass? Actually, the collet die is sizing to fit the brass to a bullet, not a chamber. Use it for both guns and see what your results are. Also, you can measure the run-out on the sizing stem for the RCBS neck-sizing die. It may benefit from straightening. Further, if you can leave the sizing stem/expander ball loose in the die, it will find its own center rather than deforming the brass. You have several options. . [/QUOTE]
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Neck Concentricity Help
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