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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Brass sticking at all powder charges
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<blockquote data-quote="Pdvdh" data-source="post: 1502852" data-attributes="member: 4191"><p>How many reloaders do you know with 0.0001" measurement tools? Such tools are actually capable of identifying dimensional changes down to less than 0.00005"</p><p></p><p>The brass casings themselves most commonly have dimensional tolerances in excess of 0.0001". How do I know? Because I detect dimensional OD variation measurements on my 0.001" Mitutoyo calipers on a common basis. What good does it do to measure background noise inherent in the casing dimensions at the time of manufacture and sale?</p><p></p><p>Answer? It accomplishes nothing useful. Because excess case strain doesn't even begin until expansion is at least 10 times greater than the 0.00005" that can be detected with a tool certified accurate down to 0.0001" measurement.</p><p></p><p>All this to say, not every word spoken by Hodgdon is the equivalent of the Gospel.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1502852, member: 4191"] How many reloaders do you know with 0.0001" measurement tools? Such tools are actually capable of identifying dimensional changes down to less than 0.00005" The brass casings themselves most commonly have dimensional tolerances in excess of 0.0001". How do I know? Because I detect dimensional OD variation measurements on my 0.001" Mitutoyo calipers on a common basis. What good does it do to measure background noise inherent in the casing dimensions at the time of manufacture and sale? Answer? It accomplishes nothing useful. Because excess case strain doesn't even begin until expansion is at least 10 times greater than the 0.00005" that can be detected with a tool certified accurate down to 0.0001" measurement. All this to say, not every word spoken by Hodgdon is the equivalent of the Gospel. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Brass sticking at all powder charges
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