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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: 2444341" data-attributes="member: 118038"><p>Im a liitle confused by your discussion of weighting factor and case volume inputs in QL..</p><p>As far as I know these are 2 separate data inputs and not really that related to one another?</p><p></p><p>Case volume is just used a proxy for a pressure bomb volume where the explosion takes place.</p><p></p><p>Weighting factor is concerned with energy losses in the rifle and cartridge system. Energy loss will definitely affect pressure because energy is lost and does not propel the bullet.</p><p> Losses are primarily energy lost through heat, from friction of the bullet in the bbl., and from gas blow by in front of the bullet. All of these losses slow the bullets velocity and therefore keep pressure from being higher than it would be if there were no losses. Actually higher bbl friction might make pressure go up.</p><p>So its all a net effect I guess</p><p></p><p>Im not scared to adjust Weighting Factor a little bit based on jump, bullet type etc. It will affect pressure and velocity but its real world stuff.</p><p></p><p>I believe if I remember the users manual says for Barnes bullets the factor has to be .55 for example.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2444341, member: 118038"] Im a liitle confused by your discussion of weighting factor and case volume inputs in QL.. As far as I know these are 2 separate data inputs and not really that related to one another? Case volume is just used a proxy for a pressure bomb volume where the explosion takes place. Weighting factor is concerned with energy losses in the rifle and cartridge system. Energy loss will definitely affect pressure because energy is lost and does not propel the bullet. Losses are primarily energy lost through heat, from friction of the bullet in the bbl., and from gas blow by in front of the bullet. All of these losses slow the bullets velocity and therefore keep pressure from being higher than it would be if there were no losses. Actually higher bbl friction might make pressure go up. So its all a net effect I guess Im not scared to adjust Weighting Factor a little bit based on jump, bullet type etc. It will affect pressure and velocity but its real world stuff. I believe if I remember the users manual says for Barnes bullets the factor has to be .55 for example. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
QuickLOAD way off from reality. Solutions?
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