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Rifles, Reloading, Optics, Equipment
Reloading
Primers: Std. vs. Magnum
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<blockquote data-quote="freddiej" data-source="post: 1934221" data-attributes="member: 26227"><p>I have a 17 Rem, the 7.5 Remington primers are BR/thick cup primers. if I did not use them for my 17 rem the primer cups would rupture ever single time. this is a special situation that the thick cup primers were made for. </p><p>as to the original question, 400 vs. 450's I have yet to see a cup difference in the standard and the magnum CCI small rifle primers. Since my reloading room is next to my office I just measured the cups on CCI 400's and 450's. they both came out to be 0.014" so no difference in cups. </p><p>the reason I would pick magnum over standard primers is the type of powder I was using and the volume. I have found taht ball powder ignites better with magnum primers and extruded ignites well with either so I use standard primers. trying to ignite a lot of powder means I use a magnum primer.</p></blockquote><p></p>
[QUOTE="freddiej, post: 1934221, member: 26227"] I have a 17 Rem, the 7.5 Remington primers are BR/thick cup primers. if I did not use them for my 17 rem the primer cups would rupture ever single time. this is a special situation that the thick cup primers were made for. as to the original question, 400 vs. 450's I have yet to see a cup difference in the standard and the magnum CCI small rifle primers. Since my reloading room is next to my office I just measured the cups on CCI 400's and 450's. they both came out to be 0.014" so no difference in cups. the reason I would pick magnum over standard primers is the type of powder I was using and the volume. I have found taht ball powder ignites better with magnum primers and extruded ignites well with either so I use standard primers. trying to ignite a lot of powder means I use a magnum primer. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Primers: Std. vs. Magnum
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