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Rifles, Reloading, Optics, Equipment
Reloading
IMR 7828SSC. Which primer?
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<blockquote data-quote="MagnumManiac" data-source="post: 1216959" data-attributes="member: 10755"><p>I always try a magnum primer with identical loads in cases 30-06 size. My 338-06, 270 and my 25-06 have shown a preference for magnum primers with certain powders and bullet combo's.</p><p>Groups and ES have halved with certain combo's, while others have made no difference.</p><p>Some powders just don't respond.</p><p></p><p>I even found a magnum primer in my 222 shrunk groups! It never hurts to try magnum primers when working up loads.</p><p>That rule of thumb that only 'magnum' cases require magnum primers is not necessarily true. It increases start pressure within the case, similar to what crimping does in factory rounds, which is why they have such good ES figures.</p><p></p><p>Cheers.</p><p>lightbulb</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1216959, member: 10755"] I always try a magnum primer with identical loads in cases 30-06 size. My 338-06, 270 and my 25-06 have shown a preference for magnum primers with certain powders and bullet combo's. Groups and ES have halved with certain combo's, while others have made no difference. Some powders just don't respond. I even found a magnum primer in my 222 shrunk groups! It never hurts to try magnum primers when working up loads. That rule of thumb that only 'magnum' cases require magnum primers is not necessarily true. It increases start pressure within the case, similar to what crimping does in factory rounds, which is why they have such good ES figures. Cheers. lightbulb [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
IMR 7828SSC. Which primer?
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