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Your Ultimate 500 Yard Rig
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<blockquote data-quote="djm670" data-source="post: 1669115" data-attributes="member: 36341"><p>Ha ha.. yes glue on strain gauges are cheap .. at $3 to $20 ... but then you have to convert the signal and need software to analyze it. Probably $600 to several thousand total depending on whose and how elaborate you use... </p><p></p><p><a href="https://www.shootingsoftware.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=RSI&Category_Code=PT" target="_blank">https://www.shootingsoftware.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=RSI&Category_Code=PT</a></p><p></p><p><a href="https://oehler-research.com/system-85-ballistic-instrumentation/" target="_blank">https://oehler-research.com/system-85-ballistic-instrumentation/</a></p><p></p><p>I will probably continue to analyze my fired cases and primers as it has served me well for 50 years.. evidently you are operating on a different level than I am. I am happy that you are able to do so. </p><p></p><p>And I am not ready to concede the barrel friction argument between a 6.5 diameter bullet and a 7 mm diameter bullet at the same weight or within 7 grains ... say a 143 grain 6.5 ELD X. The increase in surface area is significant for the half millimeter increase in diameter and I doubt the length growth for the similar weight (150 grain) ELD X 7 mm vs a 6.5 bullet of the same type ELD X is significantly longer.. although I have never had any 7 mm bullets to measure. I suspect those numbers are very close between the two bullets.</p></blockquote><p></p>
[QUOTE="djm670, post: 1669115, member: 36341"] Ha ha.. yes glue on strain gauges are cheap .. at $3 to $20 ... but then you have to convert the signal and need software to analyze it. Probably $600 to several thousand total depending on whose and how elaborate you use... [URL]https://www.shootingsoftware.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=RSI&Category_Code=PT[/URL] [URL]https://oehler-research.com/system-85-ballistic-instrumentation/[/URL] I will probably continue to analyze my fired cases and primers as it has served me well for 50 years.. evidently you are operating on a different level than I am. I am happy that you are able to do so. And I am not ready to concede the barrel friction argument between a 6.5 diameter bullet and a 7 mm diameter bullet at the same weight or within 7 grains ... say a 143 grain 6.5 ELD X. The increase in surface area is significant for the half millimeter increase in diameter and I doubt the length growth for the similar weight (150 grain) ELD X 7 mm vs a 6.5 bullet of the same type ELD X is significantly longer.. although I have never had any 7 mm bullets to measure. I suspect those numbers are very close between the two bullets. [/QUOTE]
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