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Rifles, Reloading, Optics, Equipment
Reloading
Hard bolt Lift
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<blockquote data-quote="Bang4theBuck" data-source="post: 2716802" data-attributes="member: 73596"><p>I would be looking at two things:</p><p>1. Mentioned above- you might be pushing the shoulders back excessively with sizing and when the case expands on next firing it is expanding violently and causing the hard bolt lift. </p><p>2. Same condition could be causing you to trim the necks to a dimension that seems correct for the OAL, but once the case expands, you could be shoving it into the throat. </p><p></p><p>What is your unfired case neck dimension compared to your fired case neck dimension and what is the chamber neck dimension? Could be another cause. Especially knowing the you necked the brass down so much, the necks likely increase significantly in thickness. Doesn't explain why it didn't happen on the first firing but could be a contributor.</p></blockquote><p></p>
[QUOTE="Bang4theBuck, post: 2716802, member: 73596"] I would be looking at two things: 1. Mentioned above- you might be pushing the shoulders back excessively with sizing and when the case expands on next firing it is expanding violently and causing the hard bolt lift. 2. Same condition could be causing you to trim the necks to a dimension that seems correct for the OAL, but once the case expands, you could be shoving it into the throat. What is your unfired case neck dimension compared to your fired case neck dimension and what is the chamber neck dimension? Could be another cause. Especially knowing the you necked the brass down so much, the necks likely increase significantly in thickness. Doesn't explain why it didn't happen on the first firing but could be a contributor. [/QUOTE]
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Reloading
Hard bolt Lift
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