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Rifles, Reloading, Optics, Equipment
Reloading
Lee Collet Neck Sizing Die Questions
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<blockquote data-quote="Kennibear" data-source="post: 875490" data-attributes="member: 51650"><p>I should mention that I polish EVERYBOBY's neck parts, even Big Green. In pistol dies the neck expander comes out and I chuck it into the drill press at <200rpm and hit it w/ 2000 grit + a drop of light oil (protect the threads w/ a wrap of electrical tape). 2000 not 200. The expanding mandrel looks like mirror and before and after tests show a dramatic drop in effort. I have machinist Micrometers w/ standards 0" - 6" (Starrett) that read to a ten-thousandth and it changes less than one division (<0.0001").</p><p>Well worth the effort. Hand polishing costs manufacturers big $ so I don't harp on any of them.</p><p>Glad to do it myself.</p></blockquote><p></p>
[QUOTE="Kennibear, post: 875490, member: 51650"] I should mention that I polish EVERYBOBY's neck parts, even Big Green. In pistol dies the neck expander comes out and I chuck it into the drill press at <200rpm and hit it w/ 2000 grit + a drop of light oil (protect the threads w/ a wrap of electrical tape). 2000 not 200. The expanding mandrel looks like mirror and before and after tests show a dramatic drop in effort. I have machinist Micrometers w/ standards 0" - 6" (Starrett) that read to a ten-thousandth and it changes less than one division (<0.0001"). Well worth the effort. Hand polishing costs manufacturers big $ so I don't harp on any of them. Glad to do it myself. [/QUOTE]
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Lee Collet Neck Sizing Die Questions
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