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Rifles, Reloading, Optics, Equipment
Reloading
243 ladder test h4350 help
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<blockquote data-quote="ericbc7" data-source="post: 1944343" data-attributes="member: 79488"><p>To be clear, it is my understanding that the bullets that group together on a ladder test do so because they have similar velocities. We want to identify the charge weights that correspond to those velocities so we can load in the middle of the node to reduce the effects of small variations in actual charge weights or temperature sensitivity. </p><p></p><p>I honestly would like to hear an explanation of how a ladder test could give better, repeatable information for finding velocity nodes than a chronograph.</p><p>I could see a ladder test giving you other useful information like performance of a marginally stabilized bullet at range or true bc values. 3 shot group ladders might also give you some insight into a rifle's harmonic quirks, but in that case you are not basing your charge weight on velocity nodes. That case involves finding a velocity that works with that rifle/bullet combo and is part of a much more complicated process to find a powder type that has a velocity node that coincides with the harmonics dictated velocity.</p><p></p><p>As a civil engineer I like to eliminate variables when I am able, particularly when finding velocity nodes Which is so easily and directly measurable. That many benchrest shooters do ladder tests doesn't explain why they do. I can't imagine that its because their ladder tests generate better relative velocity information.</p></blockquote><p></p>
[QUOTE="ericbc7, post: 1944343, member: 79488"] To be clear, it is my understanding that the bullets that group together on a ladder test do so because they have similar velocities. We want to identify the charge weights that correspond to those velocities so we can load in the middle of the node to reduce the effects of small variations in actual charge weights or temperature sensitivity. I honestly would like to hear an explanation of how a ladder test could give better, repeatable information for finding velocity nodes than a chronograph. I could see a ladder test giving you other useful information like performance of a marginally stabilized bullet at range or true bc values. 3 shot group ladders might also give you some insight into a rifle’s harmonic quirks, but in that case you are not basing your charge weight on velocity nodes. That case involves finding a velocity that works with that rifle/bullet combo and is part of a much more complicated process to find a powder type that has a velocity node that coincides with the harmonics dictated velocity. As a civil engineer I like to eliminate variables when I am able, particularly when finding velocity nodes Which is so easily and directly measurable. That many benchrest shooters do ladder tests doesn’t explain why they do. I can’t imagine that its because their ladder tests generate better relative velocity information. [/QUOTE]
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243 ladder test h4350 help
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