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Rifles, Reloading, Optics, Equipment
Reloading
brass weight sorting
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<blockquote data-quote="milanuk" data-source="post: 573599" data-attributes="member: 376"><p>Sort testing was the idea... take some cases, measure them, load them, shoot them once to get them fire-formed to the chamber, do a volume measurement on each of them, then fire them again for velocity measurement. Compare the two measurements (weight vs. 1x fired volume) as a predictor of muzzle velocity. What part of that is unclear or appeared to have changed?</p><p></p><p>Technically I think it *is* possible to test more than one thing at a time - but its beyond my technically ability at this point <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p> </p><p></p><p></p><p>The answer is... it varies <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></p><p></p><p>When I neck size only... it is usually good for 2-3 firings, at which point I clean (wet SS tumbling), anneal, size, trim, etc. In between I brush the necks and give 'em a twist with #0000 steel wool. For most of my load testing and/or small-batch practice stuff, this is what I do most often.</p><p></p><p>I'm about ready to go back to F/L sizing w/ a bushing die simply because I like knowing the case is going to chamber easy each and every time, etc. I don't size very much, maybe 0.001" shoulder bump or as close as I can reliably measure.</p></blockquote><p></p>
[QUOTE="milanuk, post: 573599, member: 376"] Sort testing was the idea... take some cases, measure them, load them, shoot them once to get them fire-formed to the chamber, do a volume measurement on each of them, then fire them again for velocity measurement. Compare the two measurements (weight vs. 1x fired volume) as a predictor of muzzle velocity. What part of that is unclear or appeared to have changed? Technically I think it *is* possible to test more than one thing at a time - but its beyond my technically ability at this point ;) The answer is... it varies :rolleyes: When I neck size only... it is usually good for 2-3 firings, at which point I clean (wet SS tumbling), anneal, size, trim, etc. In between I brush the necks and give 'em a twist with #0000 steel wool. For most of my load testing and/or small-batch practice stuff, this is what I do most often. I'm about ready to go back to F/L sizing w/ a bushing die simply because I like knowing the case is going to chamber easy each and every time, etc. I don't size very much, maybe 0.001" shoulder bump or as close as I can reliably measure. [/QUOTE]
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brass weight sorting
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