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Rifles, Reloading, Optics, Equipment
Reloading
Overpressure?
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<blockquote data-quote="TRexF16" data-source="post: 3000829" data-attributes="member: 108912"><p>Keep in mind that some recent (like three years ago - pre-Covid) lots of Winchester "blue box" brass cup LR and LRM primers have been significantly undersized and might make it look like your primer pockets were oversized when in reality the primers were just undersized. I discovered this when doing some load workup for a buddy with his 30-06 and Winchester "blue box" brass primers he provided. Checked some recently (just before covid) purchased bricks of the same type primers in my own stash with the micrometer and found they are the same. I think (hope) that's been corrected by now. Winchester used to be some of the largest diameter primers (realizing we are dealing with "tenths") but they certainly sold some undersized ones 3 years ago.</p><p>I understand you found the pinhole where the primer pierced but just throwing this out FYI.</p><p></p><p>Cheers,</p><p>Rex</p></blockquote><p></p>
[QUOTE="TRexF16, post: 3000829, member: 108912"] Keep in mind that some recent (like three years ago - pre-Covid) lots of Winchester "blue box" brass cup LR and LRM primers have been significantly undersized and might make it look like your primer pockets were oversized when in reality the primers were just undersized. I discovered this when doing some load workup for a buddy with his 30-06 and Winchester "blue box" brass primers he provided. Checked some recently (just before covid) purchased bricks of the same type primers in my own stash with the micrometer and found they are the same. I think (hope) that's been corrected by now. Winchester used to be some of the largest diameter primers (realizing we are dealing with "tenths") but they certainly sold some undersized ones 3 years ago. I understand you found the pinhole where the primer pierced but just throwing this out FYI. Cheers, Rex [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Overpressure?
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