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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
neck runout with redding bushing dies???
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<blockquote data-quote="Brent" data-source="post: 57782" data-attributes="member: 99"><p>Old topic but, might be of interest...</p><p></p><p>A "FL non-bushing type" die is the only type die that will reduce or eliminate RO by sizing. </p><p></p><p>A bushing when used in a FL or NK die floats laterally, as the bore it sets into is slightly oversize (and this oversize bore in my opinion is totally unnecessary, and can actually allow RO to form in sizing). </p><p></p><p>The source of the RO is the first thing to look for and to correct.</p><p></p><p>Here's the facts though; The body of the case must be held tighly (a FL die does this) before the case neck enters the neck sizing bore. The neck sizing bore must be concentric to the body bore and must not move laterally (like a bushing will) in order to force a neck with RO back to center, or into concentricity. This RO problem simply can not be corrected with a commercial neck bushing die the way they are currently machined oversize, you will need a conventional FL die to do so.</p></blockquote><p></p>
[QUOTE="Brent, post: 57782, member: 99"] Old topic but, might be of interest... A "FL non-bushing type" die is the only type die that will reduce or eliminate RO by sizing. A bushing when used in a FL or NK die floats laterally, as the bore it sets into is slightly oversize (and this oversize bore in my opinion is totally unnecessary, and can actually allow RO to form in sizing). The source of the RO is the first thing to look for and to correct. Here's the facts though; The body of the case must be held tighly (a FL die does this) before the case neck enters the neck sizing bore. The neck sizing bore must be concentric to the body bore and must not move laterally (like a bushing will) in order to force a neck with RO back to center, or into concentricity. This RO problem simply can not be corrected with a commercial neck bushing die the way they are currently machined oversize, you will need a conventional FL die to do so. [/QUOTE]
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neck runout with redding bushing dies???
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