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Long Range Hunting & Shooting
checking volume of brass
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<blockquote data-quote="Pdvdh" data-source="post: 1509140" data-attributes="member: 4191"><p>The volume of a unit weight of water, no matter which unit of weight measure used, is more than 8 times greater than the same weight of brass case material. It simply means the volume of water you're able to repeatably, accurately measure by weight, is 8x greater than the volume of case brass you'll be able to accurately measure by weight, with whatever scale you use to measure the weight. </p><p></p><p>I suppose the crux of the matter is; ... does one believe the exterior dimensions of a quality brand of brass casings, after fire-formed to your chamber, possesses exterior dimensional tolerances so poor that you'll get better inner case volume comparisons by weighing the volume of water in the case, rather than by weighing the brass case material itself. Knowing that volumetric differences in brass are much more easily detected, and that increasing brass case weight means less inner case volume. </p><p></p><p>If the cases were manufactured by Jed Clampett, or you're mixing multiple brands of cases while at the same time in pursuit of identical inner case volumes, well perhaps the answer is yes. Then it might be preferable to fill each case with liquid and then weigh the liquid weight. Or make life simpler. Discard the Jed Clampett head-stamped cartridge casings.</p><p></p><p>[ATTACH=full]110456[/ATTACH]</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1509140, member: 4191"] The volume of a unit weight of water, no matter which unit of weight measure used, is more than 8 times greater than the same weight of brass case material. It simply means the volume of water you're able to repeatably, accurately measure by weight, is 8x greater than the volume of case brass you'll be able to accurately measure by weight, with whatever scale you use to measure the weight. I suppose the crux of the matter is; ... does one believe the exterior dimensions of a quality brand of brass casings, after fire-formed to your chamber, possesses exterior dimensional tolerances so poor that you'll get better inner case volume comparisons by weighing the volume of water in the case, rather than by weighing the brass case material itself. Knowing that volumetric differences in brass are much more easily detected, and that increasing brass case weight means less inner case volume. If the cases were manufactured by Jed Clampett, or you're mixing multiple brands of cases while at the same time in pursuit of identical inner case volumes, well perhaps the answer is yes. Then it might be preferable to fill each case with liquid and then weigh the liquid weight. Or make life simpler. Discard the Jed Clampett head-stamped cartridge casings. [ATTACH=full]110456[/ATTACH] [/QUOTE]
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checking volume of brass
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