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Rifles, Reloading, Optics, Equipment
Reloading
Digital Headspace Gauge
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<blockquote data-quote="TxPhred" data-source="post: 2517734" data-attributes="member: 56833"><p>After following this thread with interest, I will offer my opinion. I really like the term "comparator". While I do use "dummy cases" for baselines in some scenarios, different bullets seating depths and such within the same caliber. With this gauge, and in my humblest opinion, the fired case IS your dummy case, and this tool will help you determine the measurement of shoulder bump you have or intend to use. The ultimate in KISS systems for this application, not to say other comparators can't provide the same data. Load different brand brass with the same load and check brass bounce back. Confirm lot number brass differences in once fired scenarios. It is a very good tool and not caliber specific. I get that it may not be repeatable historically, like did I set it in the exact same position as the last time I measured, probably not, but not going there. </p><p></p><p>Now, I have read some fireformed brass sometimes needs more than the first fire forming to get the true form of the chamber (don't argue the point, I didn't state this). This tool will help you in that regard. Fire form once-first time/keep a case, twice/keep a case and so on, base line on the first case then measure the others against the base line first case (by zeroing the gauge on it). Now you have data to determine whether this is necessary or not in your application. YMMV. And Thanks to everyone here for teaching me a bunch.</p></blockquote><p></p>
[QUOTE="TxPhred, post: 2517734, member: 56833"] After following this thread with interest, I will offer my opinion. I really like the term “comparator”. While I do use “dummy cases” for baselines in some scenarios, different bullets seating depths and such within the same caliber. With this gauge, and in my humblest opinion, the fired case IS your dummy case, and this tool will help you determine the measurement of shoulder bump you have or intend to use. The ultimate in KISS systems for this application, not to say other comparators can’t provide the same data. Load different brand brass with the same load and check brass bounce back. Confirm lot number brass differences in once fired scenarios. It is a very good tool and not caliber specific. I get that it may not be repeatable historically, like did I set it in the exact same position as the last time I measured, probably not, but not going there. Now, I have read some fireformed brass sometimes needs more than the first fire forming to get the true form of the chamber (don’t argue the point, I didn’t state this). This tool will help you in that regard. Fire form once-first time/keep a case, twice/keep a case and so on, base line on the first case then measure the others against the base line first case (by zeroing the gauge on it). Now you have data to determine whether this is necessary or not in your application. YMMV. And Thanks to everyone here for teaching me a bunch. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Digital Headspace Gauge
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