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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Why I think the Satterlee and Audette Ladder Tests Work and Why-- You Decide!
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<blockquote data-quote="Veteran" data-source="post: 2435725" data-attributes="member: 118038"><p>Here's a graph of velocity vs. charge weight for N565 in a 338 LM</p><p> </p><p> </p><p> <img src="https://www.longrangehunting.com/attachments/1643989992815-png.337932/" alt="1643989992815" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p> </p><p>Now using the actual velocities from chronograph and putting them in the QL model to back calculate burn rate one can look at burn rate over charge weight and pressure changes over time as charge weight goes up.</p><p> </p><p> </p><p> <img src="https://www.longrangehunting.com/attachments/1643990120816-png.337938/" alt="1643990120816" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>First I posted these graphs in a whole recent discussion on Burn Rate on LRH.......but they sparked a question. How the heck can you have a </p><p>spike like that in velocity with increasing charge weight and then how the heck can velocity fall or flatten as the charge weight goes up?</p><p></p><p>Aint that contrary to the laws of physics????</p><p></p><p>Below are a series of my thoughts and ideas as to why this happened and why it is not contrary to physics and is not just a statistical </p><p>abberation either. I like the poster who questioned these curves really want to open up a can of worms and learn from the ensuing discussion!</p></blockquote><p></p>
[QUOTE="Veteran, post: 2435725, member: 118038"] Here's a graph of velocity vs. charge weight for N565 in a 338 LM [IMG alt="1643989992815"]https://www.longrangehunting.com/attachments/1643989992815-png.337932/[/IMG] Now using the actual velocities from chronograph and putting them in the QL model to back calculate burn rate one can look at burn rate over charge weight and pressure changes over time as charge weight goes up. [IMG alt="1643990120816"]https://www.longrangehunting.com/attachments/1643990120816-png.337938/[/IMG] First I posted these graphs in a whole recent discussion on Burn Rate on LRH.......but they sparked a question. How the heck can you have a spike like that in velocity with increasing charge weight and then how the heck can velocity fall or flatten as the charge weight goes up? Aint that contrary to the laws of physics???? Below are a series of my thoughts and ideas as to why this happened and why it is not contrary to physics and is not just a statistical abberation either. I like the poster who questioned these curves really want to open up a can of worms and learn from the ensuing discussion! [/QUOTE]
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Why I think the Satterlee and Audette Ladder Tests Work and Why-- You Decide!
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