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Hunting
The Basics, Starting Out
Reloading Issue: Why do measurements vary?
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<blockquote data-quote="WiscGunner" data-source="post: 2617093" data-attributes="member: 97288"><p>No.</p><p>You may meolat bullets for weight however that is NOT the general intention of meplat trimming. Bullet weight variations has the least to do with BC while exterior shape such as length or nose profile to air contact consistency has far more effect.</p><p></p><p>Length has absolutely no direct corelation to weight in bimetallic bullets, Period. Measuring the variations in the length of the lighter material dies NOT AT ALL equal the weight or dimension of the heavier metal inside. Sorting the outside dimension and/or uniforming the outside dimension does uniform the aerodynamics of the exterior profile though. Uniformity of the jacket wall, centering of the lead core, consistent velocity, bullet runout in cartridge, chamber runout from bore and exterior shape consistency have far more to due with accuracy than +/- the weight a sliver of copper. </p><p></p><p>I don't mean to be rude, but if you do in-fact meplat (trim) bullets for weight, I would suggest you research how a bullet BC is calculated and much value weight consistency has in that calculation.</p></blockquote><p></p>
[QUOTE="WiscGunner, post: 2617093, member: 97288"] No. You may meolat bullets for weight however that is NOT the general intention of meplat trimming. Bullet weight variations has the least to do with BC while exterior shape such as length or nose profile to air contact consistency has far more effect. Length has absolutely no direct corelation to weight in bimetallic bullets, Period. Measuring the variations in the length of the lighter material dies NOT AT ALL equal the weight or dimension of the heavier metal inside. Sorting the outside dimension and/or uniforming the outside dimension does uniform the aerodynamics of the exterior profile though. Uniformity of the jacket wall, centering of the lead core, consistent velocity, bullet runout in cartridge, chamber runout from bore and exterior shape consistency have far more to due with accuracy than +/- the weight a sliver of copper. I don’t mean to be rude, but if you do in-fact meplat (trim) bullets for weight, I would suggest you research how a bullet BC is calculated and much value weight consistency has in that calculation. [/QUOTE]
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The Basics, Starting Out
Reloading Issue: Why do measurements vary?
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