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Rifles, Reloading, Optics, Equipment
Reloading
Weird Issue with Run out
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<blockquote data-quote="flashhole" data-source="post: 458465" data-attributes="member: 21375"><p>You stated that you first use the Forster FL sizer w/o the expander. That will compress the neck.</p><p> </p><p>Then you stated you ran it through the Lee Collet Neck Die. I think this is your problem because you are forcing the mandrell into the neck without any support around the neck. The case will bend to the path of least resistance when forcing the mandrel into the neck and there is no telling what you might end up with. In normal operation, when the expander is pulled up through the neck on the FL sizing die it has the side wall of the die to support and align the case. No support (forcing the mandrel into the neck) offers no control. Keep in mind the collet neck die is designed to compress an already expanded neck down against a mandrel, not the other way around. You should not use the collet neck die to expand the neck.</p><p> </p><p>Use one die or the other but not both. In fact, I would suggest you do both dies (the Forster complete with expander ball) and compare the results.</p></blockquote><p></p>
[QUOTE="flashhole, post: 458465, member: 21375"] You stated that you first use the Forster FL sizer w/o the expander. That will compress the neck. Then you stated you ran it through the Lee Collet Neck Die. I think this is your problem because you are forcing the mandrell into the neck without any support around the neck. The case will bend to the path of least resistance when forcing the mandrel into the neck and there is no telling what you might end up with. In normal operation, when the expander is pulled up through the neck on the FL sizing die it has the side wall of the die to support and align the case. No support (forcing the mandrel into the neck) offers no control. Keep in mind the collet neck die is designed to compress an already expanded neck down against a mandrel, not the other way around. You should not use the collet neck die to expand the neck. Use one die or the other but not both. In fact, I would suggest you do both dies (the Forster complete with expander ball) and compare the results. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Weird Issue with Run out
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