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Rifles, Reloading, Optics, Equipment
Reloading
Load density to case capacity to consistent vel, es and sd?
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<blockquote data-quote="J E Custom" data-source="post: 1595773" data-attributes="member: 2736"><p>Lower densities can produce better groups and maybe SD, but in My experiences, It is because of lower pressures, more complete powder burn and normally faster burning powder. The downside to all of this is lower velocities than needed for long ranges.</p><p></p><p>For the big magnums, I have found that 98 to 100% case densities using powders that can Approach or meet maximum pressures will normally be the best all round. (Good SDs, good groups at range to be used, and good velocities).</p><p></p><p>Air space in the case can vary and have an effect on burn rate because of the added oxygen. This one of the reasons that slightly compressed charges are preferred by many long range shooters.</p><p></p><p>I find it easier to work up accuracy/velocity loads using powders that list the maximum load as compressed and start 2 or 3 grains lower and work up. If it reaches the accuracy node at or near 100% case density,</p><p>I am not surprised.</p><p></p><p>Just my experiences with case densities.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1595773, member: 2736"] Lower densities can produce better groups and maybe SD, but in My experiences, It is because of lower pressures, more complete powder burn and normally faster burning powder. The downside to all of this is lower velocities than needed for long ranges. For the big magnums, I have found that 98 to 100% case densities using powders that can Approach or meet maximum pressures will normally be the best all round. (Good SDs, good groups at range to be used, and good velocities). Air space in the case can vary and have an effect on burn rate because of the added oxygen. This one of the reasons that slightly compressed charges are preferred by many long range shooters. I find it easier to work up accuracy/velocity loads using powders that list the maximum load as compressed and start 2 or 3 grains lower and work up. If it reaches the accuracy node at or near 100% case density, I am not surprised. Just my experiences with case densities. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Load density to case capacity to consistent vel, es and sd?
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