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Rifles, Reloading, Optics, Equipment
Reloading
Interpreting Pressure Signs from Velocity (260 Remington load dev)
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<blockquote data-quote="1Moose" data-source="post: 1397975" data-attributes="member: 74044"><p>Great photos and graph. I guess that's exactly why sticking to similar brass when measuring web expansion for pressure is important. Per that graph, some brass is nearly twice as hard, and then from the photos there is often significantly more in one case than another. This sport / hobby is going to give me more gray hair. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>In all my rifles I've only ever shown a very faint half-moon mark from the extractor. Never like your first image where there's a prominent dimple. I'll keep experimenting and looking at the signs available to me. </p><p></p><p>And maybe I can find a good .0001-capable caliper on sale. I'd be willing to spend $100-150 if there was a reliable (and reasonable durable) model out there. Thanks again.</p></blockquote><p></p>
[QUOTE="1Moose, post: 1397975, member: 74044"] Great photos and graph. I guess that's exactly why sticking to similar brass when measuring web expansion for pressure is important. Per that graph, some brass is nearly twice as hard, and then from the photos there is often significantly more in one case than another. This sport / hobby is going to give me more gray hair. :) In all my rifles I've only ever shown a very faint half-moon mark from the extractor. Never like your first image where there's a prominent dimple. I'll keep experimenting and looking at the signs available to me. And maybe I can find a good .0001-capable caliper on sale. I'd be willing to spend $100-150 if there was a reliable (and reasonable durable) model out there. Thanks again. [/QUOTE]
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Interpreting Pressure Signs from Velocity (260 Remington load dev)
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