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The Range
Ammo & Reloading
My proof: sweat the details
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<blockquote data-quote="Gus Petch" data-source="post: 2868981" data-attributes="member: 5452"><p>I can appreciate your goal. However, there are problems with your data collection that negate your results.</p><ul> <li data-xf-list-type="ul">You tightened up your charge weight tolerances. How accurate is your scale and how did you verify its accuracy? How much (if any) bearing did this change have on your end results?</li> <li data-xf-list-type="ul">You tightened up your case length tolerances. How much (if any) bearing did this change have on your end results?</li> <li data-xf-list-type="ul">You tightened up your OAL tolerances. How much (if any) bearing did this change have on your end results?</li> <li data-xf-list-type="ul">You sorted brass based on weight. How much (if any) bearing did this change have on your end results?</li> <li data-xf-list-type="ul">You changed the chamfering angle in the deburring step. How much (if any) bearing did this change have on your end results?</li> <li data-xf-list-type="ul">You uniformed primer pockets. How much (if any) bearing did this change have on your end results?</li> <li data-xf-list-type="ul">You didn't chrono any of the loads to check external ballistics. (Chronograph technology has reached a point where they're fairly affordable and a wise investment if you're trying to chase a certain reloading goal.)</li> <li data-xf-list-type="ul">Most importantly, you only fired a total of six rounds for the test. Bump that number up to 15 rounds per load.</li> </ul><p>I'm not trying to heckle or harangue you, but if you're trying to gather repeatable data from your loading and range efforts, you'll need to make a few changes.</p></blockquote><p></p>
[QUOTE="Gus Petch, post: 2868981, member: 5452"] I can appreciate your goal. However, there are problems with your data collection that negate your results. [LIST] [*]You tightened up your charge weight tolerances. How accurate is your scale and how did you verify its accuracy? How much (if any) bearing did this change have on your end results? [*]You tightened up your case length tolerances. How much (if any) bearing did this change have on your end results? [*]You tightened up your OAL tolerances. How much (if any) bearing did this change have on your end results? [*]You sorted brass based on weight. How much (if any) bearing did this change have on your end results? [*]You changed the chamfering angle in the deburring step. How much (if any) bearing did this change have on your end results? [*]You uniformed primer pockets. How much (if any) bearing did this change have on your end results? [*]You didn't chrono any of the loads to check external ballistics. (Chronograph technology has reached a point where they're fairly affordable and a wise investment if you're trying to chase a certain reloading goal.) [*]Most importantly, you only fired a total of six rounds for the test. Bump that number up to 15 rounds per load. [/LIST] I'm not trying to heckle or harangue you, but if you're trying to gather repeatable data from your loading and range efforts, you'll need to make a few changes. [/QUOTE]
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