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Rifles, Reloading, Optics, Equipment
Reloading
Measuring TIR bullet run-out
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<blockquote data-quote="esshup" data-source="post: 315989" data-attributes="member: 11101"><p>I'm doing some loading in preperation for hunting season. In checking the runout of the loaded rounds, where should the indicators' tip be placed on the bullet? I'm using a Sinclair Concentricity gauge, and I have the contact points for the case set at just in front of the base, and just behind where the shoulder meets the case body.</p><p> </p><p>I'm finding that I can group the loaded rounds in 3 distinct groups, 1) TIR of <.0015 TIR, 2) .002-.003 TIR and 3) .005-.007 TIR, and they are 60%, 30% and 10% of the loaded rounds respectively. Same brass lot, same bullet lot and all fired in the same gun, same number of firings on the cases.</p></blockquote><p></p>
[QUOTE="esshup, post: 315989, member: 11101"] I'm doing some loading in preperation for hunting season. In checking the runout of the loaded rounds, where should the indicators' tip be placed on the bullet? I'm using a Sinclair Concentricity gauge, and I have the contact points for the case set at just in front of the base, and just behind where the shoulder meets the case body. I'm finding that I can group the loaded rounds in 3 distinct groups, 1) TIR of <.0015 TIR, 2) .002-.003 TIR and 3) .005-.007 TIR, and they are 60%, 30% and 10% of the loaded rounds respectively. Same brass lot, same bullet lot and all fired in the same gun, same number of firings on the cases. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Measuring TIR bullet run-out
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