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Rifles, Reloading, Optics, Equipment
Reloading
Need guidance...case neck thickness
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<blockquote data-quote="BallisticsGuy" data-source="post: 1565683" data-attributes="member: 96226"><p>You should be just knocking the high spots down to the least common denominator unless you have a neck-turn required chamber. In any event, I don't advise going under .010" thickness. Most of mine run .013-.014 neck wall thickness. The ball micrometer is an important part, get a good one. Doing this particular thing wrong is massively worse than not doing it at all.</p><p></p><p>How do you know they "need" trimmed? Needing case neck trimming is usually a function of having a deliberate tight neck chamber that won't accept brass of standard thickness. The normal distribution I see in neck thicknesses in any single bag of brass is ~ +/-.001 from the median.</p></blockquote><p></p>
[QUOTE="BallisticsGuy, post: 1565683, member: 96226"] You should be just knocking the high spots down to the least common denominator unless you have a neck-turn required chamber. In any event, I don't advise going under .010" thickness. Most of mine run .013-.014 neck wall thickness. The ball micrometer is an important part, get a good one. Doing this particular thing wrong is massively worse than not doing it at all. How do you know they "need" trimmed? Needing case neck trimming is usually a function of having a deliberate tight neck chamber that won't accept brass of standard thickness. The normal distribution I see in neck thicknesses in any single bag of brass is ~ +/-.001 from the median. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Need guidance...case neck thickness
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