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Rifles, Reloading, Optics, Equipment
Reloading
brass weight sorting
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<blockquote data-quote="Mikecr" data-source="post: 560537" data-attributes="member: 1521"><p>Bart, as implied new cases & FL sized cases are not in the right condition to measure capacity.</p><p>Also, the implication that cases eventually expand to the chamber, so weight is all that matters, is dead wrong. </p><p>It is INITIAL CONDITIONS that hold the largest affect on peak pressures and internal ballistic timing.</p><p>Yeah a case expands to the chamber but:</p><p>-Neck tension changes pressure & velocity & tune</p><p>-Seating depth changes pressure & velocity & tune</p><p>-Anything about the primer, flash hole, or powder lay changes pressure & velocity & tune</p><p>-And initial containment(loaded case capacity) **** sure changes pressure & velocity & tune</p></blockquote><p></p>
[QUOTE="Mikecr, post: 560537, member: 1521"] Bart, as implied new cases & FL sized cases are not in the right condition to measure capacity. Also, the implication that cases eventually expand to the chamber, so weight is all that matters, is dead wrong. It is INITIAL CONDITIONS that hold the largest affect on peak pressures and internal ballistic timing. Yeah a case expands to the chamber but: -Neck tension changes pressure & velocity & tune -Seating depth changes pressure & velocity & tune -Anything about the primer, flash hole, or powder lay changes pressure & velocity & tune -And initial containment(loaded case capacity) **** sure changes pressure & velocity & tune [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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brass weight sorting
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