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Rifles, Reloading, Optics, Equipment
Reloading
Seating Depth Variation
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<blockquote data-quote="bill123" data-source="post: 944499" data-attributes="member: 69116"><p>I'm using 167 grain Lapua Scenars in Lapa brass, a Redding micrometer seater and Forster Co-Ax press. I'm measuring base to ogive w/a Hornady bullet comparater.</p><p></p><p>Typically out of 40 rounds, I get around 50% right on my 2.269" CBTO goal measurement. Maybe 25% are over by .002" and 25% are under, some by as much as .006".</p><p></p><p>I've tried an RCBS press and a Harrel press, RCBS and Forster micrometer dies. I seat the bullets slowly and evenly.</p><p></p><p>Typicall with the bullets that are under length, I "pull" them with an Impact Bullet Puller and reseat. When I reseat, there isn't always a 1:1 ratio between the micrometer setting and the increase in depth of the bullet. In other words, I can screw down the micrometer and the bullet does not always go down a corresponding amount.</p><p></p><p>My suspicion is that the variance is caused by slight anomalies on the bullets. My questions are:</p><p></p><p>Am I right?</p><p>If so, Is the initial seating the right seating and I should leave it alone?</p><p>Am I doing something wrong in seating?</p><p>Will reseating after pulling a bullet reduce accuracy? I don't seem to lose any concentricity.</p></blockquote><p></p>
[QUOTE="bill123, post: 944499, member: 69116"] I’m using 167 grain Lapua Scenars in Lapa brass, a Redding micrometer seater and Forster Co-Ax press. I’m measuring base to ogive w/a Hornady bullet comparater. Typically out of 40 rounds, I get around 50% right on my 2.269” CBTO goal measurement. Maybe 25% are over by .002” and 25% are under, some by as much as .006”. I’ve tried an RCBS press and a Harrel press, RCBS and Forster micrometer dies. I seat the bullets slowly and evenly. Typicall with the bullets that are under length, I “pull” them with an Impact Bullet Puller and reseat. When I reseat, there isn’t always a 1:1 ratio between the micrometer setting and the increase in depth of the bullet. In other words, I can screw down the micrometer and the bullet does not always go down a corresponding amount. My suspicion is that the variance is caused by slight anomalies on the bullets. My questions are: Am I right? If so, Is the initial seating the right seating and I should leave it alone? Am I doing something wrong in seating? Will reseating after pulling a bullet reduce accuracy? I don’t seem to lose any concentricity. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Seating Depth Variation
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