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Rifles, Reloading, Optics, Equipment
Reloading
Weighing components
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<blockquote data-quote="kiwi3006" data-source="post: 377329" data-attributes="member: 8927"><p>Just for interest has anyone done any calculations to work out how much the volume changes when the mass changes.</p><p>The density of brass is 8.4 to 8.7g/cm3. This 129.631 gr/cm3. </p><p>The density of brass changes due to the ratio of copper to zinc changing. I am not sure of the density of rifle brass</p><p>A 1 grain difference in weight is a 0.77% difference in volume. </p><p>Anyone used Quickload to see how this much difference in case capacity(volume) changes pressure/velocity etc?</p><p></p><p>My gut feeling is if you want to know case capacity then measure the case capacity, but be aware that the density of water changes with temperature.</p><p></p><p>Stu.</p></blockquote><p></p>
[QUOTE="kiwi3006, post: 377329, member: 8927"] Just for interest has anyone done any calculations to work out how much the volume changes when the mass changes. The density of brass is 8.4 to 8.7g/cm3. This 129.631 gr/cm3. The density of brass changes due to the ratio of copper to zinc changing. I am not sure of the density of rifle brass A 1 grain difference in weight is a 0.77% difference in volume. Anyone used Quickload to see how this much difference in case capacity(volume) changes pressure/velocity etc? My gut feeling is if you want to know case capacity then measure the case capacity, but be aware that the density of water changes with temperature. Stu. [/QUOTE]
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