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Rifles, Reloading, Optics, Equipment
Reloading
bullet runout
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<blockquote data-quote="AJ Peacock" data-source="post: 146285" data-attributes="member: 4885"><p>[ QUOTE ]</p><p> Achieving .000-.005" run out is near impossible and is not needed, especially in a hunting cartridge. </p><p></p><p>[/ QUOTE ]</p><p></p><p>Gene,</p><p>Did you mean .000 - .0005"? As .005" is easy to achieve with good brass and procedures. I reloaded 35 rounds for my 7RM this weekend, only 3 rounds were more than .002", They were around .0035". Most of the others were around .001-.0015" runout with several being less than .001". Measurements were taken 1/4" back from the tip on the loaded round using a Sinclair Concentricity gauge.</p><p></p><p>BUT, this is with GOOD Brass (Norma in this case). With mixed brass that has large neck thickness variations, I've seen typical .007-,008" runouts. In my opinion, it comes down to #1 starting with good brass #2 good procedures to not mess it up.</p><p></p><p>Don</p></blockquote><p></p>
[QUOTE="AJ Peacock, post: 146285, member: 4885"] [ QUOTE ] Achieving .000-.005" run out is near impossible and is not needed, especially in a hunting cartridge. [/ QUOTE ] Gene, Did you mean .000 - .0005"? As .005" is easy to achieve with good brass and procedures. I reloaded 35 rounds for my 7RM this weekend, only 3 rounds were more than .002", They were around .0035". Most of the others were around .001-.0015" runout with several being less than .001". Measurements were taken 1/4" back from the tip on the loaded round using a Sinclair Concentricity gauge. BUT, this is with GOOD Brass (Norma in this case). With mixed brass that has large neck thickness variations, I've seen typical .007-,008" runouts. In my opinion, it comes down to #1 starting with good brass #2 good procedures to not mess it up. Don [/QUOTE]
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Reloading
bullet runout
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