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Rifles, Reloading, Optics, Equipment
Reloading
Case weight
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<blockquote data-quote="benchracer" data-source="post: 1111933" data-attributes="member: 22069"><p>I ran the test the same way you did, checking 94 once fired cases. The overall variance in case weight was 8 grains, while the overall variance in internal volume was 3.9 grains. </p><p> </p><p>91 of 94 cases had an internal volume between 69.2 and 70.4 grains. Of the three outliers, only one would have been an obvious cull by case weight alone. The case weight of the remaining 91 ranged from 192.6 to 199.5 grains. The three outliers weighed 200.6, 199.5, and 198.4 grains, having internal volumes of 68.8, 66.5, and 66.8 grains, respectively. Only one of them would have been an obvious outlier by case weight. 93 of 94 cases tested showed ZERO relationship between case weight and internal volume.</p><p> </p><p>If uniform case volume is the objective, the only way to reliably achieve that is by actually measuring the volume. If you feel like you are accomplishing something by weight sorting your cases, go ahead. It's your time. Waste it how you wish.</p></blockquote><p></p>
[QUOTE="benchracer, post: 1111933, member: 22069"] I ran the test the same way you did, checking 94 once fired cases. The overall variance in case weight was 8 grains, while the overall variance in internal volume was 3.9 grains. 91 of 94 cases had an internal volume between 69.2 and 70.4 grains. Of the three outliers, only one would have been an obvious cull by case weight alone. The case weight of the remaining 91 ranged from 192.6 to 199.5 grains. The three outliers weighed 200.6, 199.5, and 198.4 grains, having internal volumes of 68.8, 66.5, and 66.8 grains, respectively. Only one of them would have been an obvious outlier by case weight. 93 of 94 cases tested showed ZERO relationship between case weight and internal volume. If uniform case volume is the objective, the only way to reliably achieve that is by actually measuring the volume. If you feel like you are accomplishing something by weight sorting your cases, go ahead. It's your time. Waste it how you wish. [/QUOTE]
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Case weight
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