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Rifles, Reloading, Optics, Equipment
Reloading
Which comes first, the chicken or the egg? Charge weight or seating depth…
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<blockquote data-quote="Veteran" data-source="post: 2274409" data-attributes="member: 118038"><p>Even if measuring Ogive off lands to Ogive off lands for different bullets, seems to me it could go either way.....</p><p></p><p>For very similarly constructed bullets with tangent profiles, or with secant profiles, maybe you are close enough the rifle doesn't care.</p><p>But what if one bullet is a blunt nose bullet with a different profile and total length (yet same weight in gr) and it has very different firictional profile going down the barrel or it has different center of gravity or both vs. the other bullets. You may get different performance results depending on all the different characteristics of a specific bullet vs. another. I do think its much much better to be measuring Ogive to lands and setting up your seating measurements that way, but when you switch bullets I think you better check the seating and performance test them to see how close or far from your assumptions are from a different bullet that worked well with a certain seating. Maybe seating is much the same, maybe not.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2274409, member: 118038"] Even if measuring Ogive off lands to Ogive off lands for different bullets, seems to me it could go either way..... For very similarly constructed bullets with tangent profiles, or with secant profiles, maybe you are close enough the rifle doesn't care. But what if one bullet is a blunt nose bullet with a different profile and total length (yet same weight in gr) and it has very different firictional profile going down the barrel or it has different center of gravity or both vs. the other bullets. You may get different performance results depending on all the different characteristics of a specific bullet vs. another. I do think its much much better to be measuring Ogive to lands and setting up your seating measurements that way, but when you switch bullets I think you better check the seating and performance test them to see how close or far from your assumptions are from a different bullet that worked well with a certain seating. Maybe seating is much the same, maybe not. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Which comes first, the chicken or the egg? Charge weight or seating depth…
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