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Rifles, Reloading, Optics, Equipment
Reloading
diff in ES between virgin brass and once fired brass
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<blockquote data-quote="Bart B" data-source="post: 845321" data-attributes="member: 5302"><p>Regarding my remark about the spread of case neck tension on the bullets in new versus once fired brass..... Yes, I think so. Depending on what dimensions a sizing die makes a fired case neck compared to an unprepped new case necks have, there could be a difference. For consistancy's sake, I think new case necks should be resized.</p><p></p><p>I've not seen any significance between bottleneck cases headspacing on their shoulders with new brass with "prepped" necks and once (or many times) full length sized ones as far as accuracy goes. Never chronographed both with the same recipie to see what muzzle velocity difference might exist. Both shot to the same point of aim with the same sight settings withing 1/2 MOA at 600 to 1000 yards in about equal atmospheric conditions.</p><p></p><p>Others may well have observed differences.</p></blockquote><p></p>
[QUOTE="Bart B, post: 845321, member: 5302"] Regarding my remark about the spread of case neck tension on the bullets in new versus once fired brass..... Yes, I think so. Depending on what dimensions a sizing die makes a fired case neck compared to an unprepped new case necks have, there could be a difference. For consistancy's sake, I think new case necks should be resized. I've not seen any significance between bottleneck cases headspacing on their shoulders with new brass with "prepped" necks and once (or many times) full length sized ones as far as accuracy goes. Never chronographed both with the same recipie to see what muzzle velocity difference might exist. Both shot to the same point of aim with the same sight settings withing 1/2 MOA at 600 to 1000 yards in about equal atmospheric conditions. Others may well have observed differences. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
diff in ES between virgin brass and once fired brass
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