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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Seating depth mystery!
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<blockquote data-quote="royinidaho" data-source="post: 394748" data-attributes="member: 2011"><p>Rich,</p><p></p><p>The reason I mentioned the RSI pressure lab is that it revealed, in a 338 RUM, with certain powders and certain load set ups a secondary pressure spike would be created somewhat prior to the bullet exiting the muzzle.</p><p></p><p>The secondary pressure spike (if that's proper terminology) was repeatable.</p><p></p><p>I don't have any written record of it though. After discussing with the fella at RSI he said the spike had been observed by others in other calibers also.</p><p></p><p>I don't recall measuring MV differences. I should improve my record keeping a bit.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 394748, member: 2011"] Rich, The reason I mentioned the RSI pressure lab is that it revealed, in a 338 RUM, with certain powders and certain load set ups a secondary pressure spike would be created somewhat prior to the bullet exiting the muzzle. The secondary pressure spike (if that's proper terminology) was repeatable. I don't have any written record of it though. After discussing with the fella at RSI he said the spike had been observed by others in other calibers also. I don't recall measuring MV differences. I should improve my record keeping a bit. [/QUOTE]
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