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Rifles, Reloading, Optics, Equipment
Reloading
Best Neck Turning Tool
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<blockquote data-quote="boomtube" data-source="post: 439115" data-attributes="member: 9215"><p>Gary, your analysis of turning a neck while the case is held firmly in line with the neck is correct in that it will insure the external axis of the neck is concentric with the body. But, that isn't the problem!</p><p> </p><p>What we want with neck turning is 1) for the neck thickness to be consistant, from one end to the other, AND 2) for the interior and exterior surfaces to be parallel. A hand-held turner follows a mandrel to accomplish that exactly as you say; it follows the neck and that results in both a consistant thickness and inside/outside alignment. FL sizing and firing will correct the tiny amount of residual run-out quite well for all but the most precise BR rifles.</p><p> </p><p>Your prefered firmly fixed turning method will insure that any internal-to-external misalignment of the neck cylinders will remain. Any thickness variation due to that residual misalignment will also remain.</p></blockquote><p></p>
[QUOTE="boomtube, post: 439115, member: 9215"] Gary, your analysis of turning a neck while the case is held firmly in line with the neck is correct in that it will insure the external axis of the neck is concentric with the body. But, that isn't the problem! What we want with neck turning is 1) for the neck thickness to be consistant, from one end to the other, AND 2) for the interior and exterior surfaces to be parallel. A hand-held turner follows a mandrel to accomplish that exactly as you say; it follows the neck and that results in both a consistant thickness and inside/outside alignment. FL sizing and firing will correct the tiny amount of residual run-out quite well for all but the most precise BR rifles. Your prefered firmly fixed turning method will insure that any internal-to-external misalignment of the neck cylinders will remain. Any thickness variation due to that residual misalignment will also remain. [/QUOTE]
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Best Neck Turning Tool
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