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Rifles, Reloading, Optics, Equipment
Reloading
Neck runout dilemma
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<blockquote data-quote="bigedp51" data-source="post: 1424755" data-attributes="member: 28965"><p>At the Whidden custom die website they tell you that they get the most concentric cases with non-bushing full length dies. And Whidden does not make neck sizing dies so this should tell you something.</p><p></p><p>1. With a neck sizing die it does not fully support the case body in alignment with the case neck during sizing.</p><p>2. If reducing the neck diameter over .004 with a bushing die it can induce neck runout.</p><p>3. If the case body is thinner on one side the case can bulge on the thin side making the case egg shaped. Meaning the runout can be coming from a egg shaped case when spinning the case on its body.</p><p></p><p>And Forster full length benchrest dies with their high mounted floating expander produce very concentric cases. (subliminal suggestion)</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1424755, member: 28965"] At the Whidden custom die website they tell you that they get the most concentric cases with non-bushing full length dies. And Whidden does not make neck sizing dies so this should tell you something. 1. With a neck sizing die it does not fully support the case body in alignment with the case neck during sizing. 2. If reducing the neck diameter over .004 with a bushing die it can induce neck runout. 3. If the case body is thinner on one side the case can bulge on the thin side making the case egg shaped. Meaning the runout can be coming from a egg shaped case when spinning the case on its body. And Forster full length benchrest dies with their high mounted floating expander produce very concentric cases. (subliminal suggestion) [/QUOTE]
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Neck runout dilemma
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