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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
QuickLOAD way off from reality. Solutions?
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<blockquote data-quote="Veteran" data-source="post: 2443360" data-attributes="member: 118038"><p>It depends on load density, percent fill, the powder stick or ball, and then temp and press too.</p><p></p><p>I've observed Ba drop with higher fill volumes and increased density w constant temp but of course pressure will act to increase Ba, </p><p>but load pack may decrease it. It all depends on the loads, load ranges, bullet seating depth, kinds of powder, etc. I have seen Ba trend down at higher charge weights too. In general we expect Ba and Velocity to go up with charge weight, but then it does not sometimes, as in the Satterlee Curve Flat spots for example. If velocity is flat or even trending down that implied Ba is flat or dropping even with increased charge weight too. A diminishing returns caused by pack of the powder, its shape and density, etc.</p><p>I also think harmonics may play into this behaviour too because of pressure and friction variation in the barrel but that's the subject of a whole different thread.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2443360, member: 118038"] It depends on load density, percent fill, the powder stick or ball, and then temp and press too. I've observed Ba drop with higher fill volumes and increased density w constant temp but of course pressure will act to increase Ba, but load pack may decrease it. It all depends on the loads, load ranges, bullet seating depth, kinds of powder, etc. I have seen Ba trend down at higher charge weights too. In general we expect Ba and Velocity to go up with charge weight, but then it does not sometimes, as in the Satterlee Curve Flat spots for example. If velocity is flat or even trending down that implied Ba is flat or dropping even with increased charge weight too. A diminishing returns caused by pack of the powder, its shape and density, etc. I also think harmonics may play into this behaviour too because of pressure and friction variation in the barrel but that's the subject of a whole different thread. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
QuickLOAD way off from reality. Solutions?
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