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<blockquote data-quote="Tymurrey" data-source="post: 273127" data-attributes="member: 859">My guess is under pressure, once fired brass, which volume increased slightly even if full length resized vs the factory new brass and an already light load the brass might not be sealing the chamber.&nbsp; Slight variations can make a huge difference on an alrighty light load.&nbsp; Have you changed brass brands or cleaned the chamber recently or done anything different than previous.&nbsp; If dented from reloading from to much lube I’ve usually seen the dent more on the shoulder than the case body and the dents would pop out after firing.&nbsp; Do you have a different lot of powder to try as well.- - - Updated - - -Also since it didn’t happen on all of them could have been a couple got mixed up that had multiple firings and the brass had work hardened enough to not expand and seal the chamber all the way.&nbsp; You didn’t happen to get H4350 instead of IMR4350 or something like that did you. My guess on accuracy is inconsistent pressures and powder ignition/burning.</blockquote>

[QUOTE="Tymurrey, post: 273127, member: 859"] My guess is under pressure, once fired brass, which volume increased slightly even if full length resized vs the factory new brass and an already light load the brass might not be sealing the chamber. Slight variations can make a huge difference on an alrighty light load. Have you changed brass brands or cleaned the chamber recently or done anything different than previous. If dented from reloading from to much lube I’ve usually seen the dent more on the shoulder than the case body and the dents would pop out after firing. Do you have a different lot of powder to try as well. [COLOR="silver"][SIZE=1]- - - Updated - - -[/SIZE][/COLOR] Also since it didn’t happen on all of them could have been a couple got mixed up that had multiple firings and the brass had work hardened enough to not expand and seal the chamber all the way. You didn’t happen to get H4350 instead of IMR4350 or something like that did you. My guess on accuracy is inconsistent pressures and powder ignition/burning. [/QUOTE]

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