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Rifles, Reloading, Optics, Equipment
Reloading
Expanding mandrels..... neccessary?
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<blockquote data-quote="bigedp51" data-source="post: 1802367" data-attributes="member: 28965"><p>I'm with milo-2 and checking to see where the runout is happening.</p><p></p><p>Bushing dies work best with tight neck chambers and neck turned brass. And the Redding bushing die FAQ tells you if you do not neck turn and the neck thickness varies .002 or more then use the dies expander. This requires using a bushing .002 to .003 smaller and using the expander to push the neck thickness variations to the outside of the neck.</p><p></p><p><span style="font-size: 22px"><strong>Tech Line & Tips (FAQs) </strong></span></p><p><a href="https://www.redding-reloading.com/tech-line-a-tips-faqs" target="_blank">https://www.redding-reloading.com/tech-line-a-tips-faqs</a></p><p></p><p>I use the Redding neck thickness gauge below, and with one turn of the wrist it tells you the neck thickness variations and average neck thickness. NOTE, neck thickness variations can also cause neck runout/bullet runout.</p><p></p><p><img src="https://i.imgur.com/blZCE83.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="https://i.imgur.com/NlyA8oI.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1802367, member: 28965"] I'm with milo-2 and checking to see where the runout is happening. Bushing dies work best with tight neck chambers and neck turned brass. And the Redding bushing die FAQ tells you if you do not neck turn and the neck thickness varies .002 or more then use the dies expander. This requires using a bushing .002 to .003 smaller and using the expander to push the neck thickness variations to the outside of the neck. [SIZE=6][B]Tech Line & Tips (FAQs) [/B][/SIZE] [URL]https://www.redding-reloading.com/tech-line-a-tips-faqs[/URL] I use the Redding neck thickness gauge below, and with one turn of the wrist it tells you the neck thickness variations and average neck thickness. NOTE, neck thickness variations can also cause neck runout/bullet runout. [IMG]https://i.imgur.com/blZCE83.jpg[/IMG] [img]https://i.imgur.com/NlyA8oI.png[/img] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Expanding mandrels..... neccessary?
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