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The Range
Ammo & Reloading
Annealing brass
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<blockquote data-quote="swampratt" data-source="post: 4369435" data-attributes="member: 15054"><p>Do this.</p><p>Size a case and then insert your calipers and measure the case neck ID.</p><p>Gently turn the case while measuring and feel the roughness of the case neck surface.</p><p>Brush the case neck with a spinning nylon bore brush.</p><p></p><p>Measure and feel again and look for any run-out.</p><p></p><p>Now anneal that sized case and measure the ID again and feel for any roughness and see if you get any run-out.</p><p></p><p>If it is still smooth and no run-out and is the proper size then you may want to do some target testing on paper and see which way is more accurate for you.</p></blockquote><p></p>
[QUOTE="swampratt, post: 4369435, member: 15054"] Do this. Size a case and then insert your calipers and measure the case neck ID. Gently turn the case while measuring and feel the roughness of the case neck surface. Brush the case neck with a spinning nylon bore brush. Measure and feel again and look for any run-out. Now anneal that sized case and measure the ID again and feel for any roughness and see if you get any run-out. If it is still smooth and no run-out and is the proper size then you may want to do some target testing on paper and see which way is more accurate for you. [/QUOTE]
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