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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Velocity swing in 7mm wsm with IMR 7828ssc
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<blockquote data-quote="Varmint Hunter" data-source="post: 1165683" data-attributes="member: 313"><p>I'm using 7828ssc with Fed 215M primers under the 160 Accubond bullet in my 7WSM and get single digit SD.</p><p></p><p>I wonder if the variance that you are experiencing is due to inconsistent neck tension.</p><p></p><p>The very first thing I'd verify is the accuracy of the chronograph readings. Shoot the same loads over a different chronograph.</p><p></p><p>I put a Chrony chronograph directly behind my Oehler 35P and the difference in the readings was considerable. I sent the Oehler back to the company for testing and they found it to be reading accurately. That left the readings from the Chrony chronograph very suspect.</p><p></p><p>Just a thought.</p></blockquote><p></p>
[QUOTE="Varmint Hunter, post: 1165683, member: 313"] I'm using 7828ssc with Fed 215M primers under the 160 Accubond bullet in my 7WSM and get single digit SD. I wonder if the variance that you are experiencing is due to inconsistent neck tension. The very first thing I'd verify is the accuracy of the chronograph readings. Shoot the same loads over a different chronograph. I put a Chrony chronograph directly behind my Oehler 35P and the difference in the readings was considerable. I sent the Oehler back to the company for testing and they found it to be reading accurately. That left the readings from the Chrony chronograph very suspect. Just a thought. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Velocity swing in 7mm wsm with IMR 7828ssc
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