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Rifles, Reloading, Optics, Equipment
Reloading
How important is primer pocket/flash hole prep?
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<blockquote data-quote="Shootin4fun" data-source="post: 1853344" data-attributes="member: 28741"><p>In my own A/B tests, I have not seen deburring make a noticeable difference on Fed or Remington brass. It may make more of a difference with fast powders than slow; that would be another test. Lapua which does not need deburring is of course more consistent in every way so that's not a direct comparison. Finding your OCW is where it's at, and will overcome some other variations in the load. I have loads that produce the same ES/SD while varying primer mfg. and brass mfg. Single or low double digit SDs. My statistical samples are usually 5 shot strings. But if you are really serious about this, then you might just want to skip all this and just buy Lapua, who do not punch, but rather drill the hole.</p></blockquote><p></p>
[QUOTE="Shootin4fun, post: 1853344, member: 28741"] In my own A/B tests, I have not seen deburring make a noticeable difference on Fed or Remington brass. It may make more of a difference with fast powders than slow; that would be another test. Lapua which does not need deburring is of course more consistent in every way so that's not a direct comparison. Finding your OCW is where it's at, and will overcome some other variations in the load. I have loads that produce the same ES/SD while varying primer mfg. and brass mfg. Single or low double digit SDs. My statistical samples are usually 5 shot strings. But if you are really serious about this, then you might just want to skip all this and just buy Lapua, who do not punch, but rather drill the hole. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How important is primer pocket/flash hole prep?
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