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Rifles, Reloading, Optics, Equipment
Reloading
168 vldh base to ogive variance
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<blockquote data-quote="Mikecr" data-source="post: 1936065" data-attributes="member: 1521"><p>You don't know the significance of deviations from BTO measure.</p><p>The ultimate goal here is in matching BC. There is no other other real gain.</p><p>Well, drag contributing to BC is separate for base, and bearing, and ogive datum, included in BTO. Each having different contributions, and you haven't separated them, nor considered other attributes of the same bullets to calculate overall drag. Things like ogive radius, nose length, meplat diameter, are missing.</p><p></p><p>For all you know, the bullets deviating in BTO also happen to match the BC mean of your lot. And some bullets matching in BTO might actually deviate from BC mean of the lot.</p><p>So you do not have enough information from BTO only to act on.</p><p></p><p>I'm sure you want to improve things. But doing things you don't understand(possibly), because this mob does things it doesn't understand, is not the way to improve things. It's just silly shortcuts to nothingville.</p><p>My advise: Buy good bullets & have faith in them.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1936065, member: 1521"] You don't know the significance of deviations from BTO measure. The ultimate goal here is in matching BC. There is no other other real gain. Well, drag contributing to BC is separate for base, and bearing, and ogive datum, included in BTO. Each having different contributions, and you haven't separated them, nor considered other attributes of the same bullets to calculate overall drag. Things like ogive radius, nose length, meplat diameter, are missing. For all you know, the bullets deviating in BTO also happen to match the BC mean of your lot. And some bullets matching in BTO might actually deviate from BC mean of the lot. So you do not have enough information from BTO only to act on. I'm sure you want to improve things. But doing things you don't understand(possibly), because this mob does things it doesn't understand, is not the way to improve things. It's just silly shortcuts to nothingville. My advise: Buy good bullets & have faith in them. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
168 vldh base to ogive variance
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