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Rifles, Reloading, Optics, Equipment
Reloading
Charge weight vs volume, in filled cases - mind blowing discovery?
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<blockquote data-quote="TracySes23" data-source="post: 932757" data-attributes="member: 52763"><p>I've read on a few occasions over the last 30 years or more, that a powder measure dump (my terminology) will give the same volume & hence excellent accuracy. I've always had a problem with that, but I've never attempted to disprove it. The reason I have a problem is because if I bump the stop a time or two it will often throw a different charge weight. If I don't bump the stop, but instead slowly bring the arm to the stop, I still get charge weights that vary. Some powders simply don't settle well.</p><p>Perhaps my logic is faulty, but I have a heck of a time trying to justify using varying charge weights just because the dropped charge came from set volume in my powder measure. Laziness & the thought of wasting components ($$$) keeps me using dumped charge weights as close as possible to being the same.</p><p>I've had only one (modified) Herter's powder measure that deviated from this & only when I used certain powders such as pistol powders or very short grained cylinder, tubular powders or ball powders. I had fabricated a micrometer adjustable cylinder for it which had a slightly larger ID than the one that was original. However it didn't work well with coarse grained powders.</p><p>I gave it away & wish I hadn't. I still weighed each charge, but rarely had to trickle in more powder. I might give the "indian giver" routine a shot. </p><p>I concluded there is an optimum ID for different powders.</p></blockquote><p></p>
[QUOTE="TracySes23, post: 932757, member: 52763"] I've read on a few occasions over the last 30 years or more, that a powder measure dump (my terminology) will give the same volume & hence excellent accuracy. I've always had a problem with that, but I've never attempted to disprove it. The reason I have a problem is because if I bump the stop a time or two it will often throw a different charge weight. If I don't bump the stop, but instead slowly bring the arm to the stop, I still get charge weights that vary. Some powders simply don't settle well. Perhaps my logic is faulty, but I have a heck of a time trying to justify using varying charge weights just because the dropped charge came from set volume in my powder measure. Laziness & the thought of wasting components ($$$) keeps me using dumped charge weights as close as possible to being the same. I've had only one (modified) Herter's powder measure that deviated from this & only when I used certain powders such as pistol powders or very short grained cylinder, tubular powders or ball powders. I had fabricated a micrometer adjustable cylinder for it which had a slightly larger ID than the one that was original. However it didn't work well with coarse grained powders. I gave it away & wish I hadn't. I still weighed each charge, but rarely had to trickle in more powder. I might give the "indian giver" routine a shot. I concluded there is an optimum ID for different powders. [/QUOTE]
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Reloading
Charge weight vs volume, in filled cases - mind blowing discovery?
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