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Rifles, Reloading, Optics, Equipment
Reloading
Standard primers in magnum cartridges?
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<blockquote data-quote="Grumulkin" data-source="post: 1485902" data-attributes="member: 29281"><p>In the really big magnums, i.e., like the 378 and 460 Weatherby Magnums I only use Federal 215 primers. For my 7mm Remington Magnum loads, I use Federal 210M primers. I use magnum primers for 257 & 300 Weathery Magnum loads, for 300 Win. Mag. loads & 458 Lot loads but I probably wouldn't need to.</p><p></p><p>For 357 Herrett loads, I use CCI 250 primers with IMR 4227. It's not a big cartridge and it's not a ball powder but I got the best accuracy with that combination.</p><p></p><p>As for having to use magnum primers with ball powders, I doubt it. I've always ignored that rule and have never had a problem.</p></blockquote><p></p>
[QUOTE="Grumulkin, post: 1485902, member: 29281"] In the really big magnums, i.e., like the 378 and 460 Weatherby Magnums I only use Federal 215 primers. For my 7mm Remington Magnum loads, I use Federal 210M primers. I use magnum primers for 257 & 300 Weathery Magnum loads, for 300 Win. Mag. loads & 458 Lot loads but I probably wouldn't need to. For 357 Herrett loads, I use CCI 250 primers with IMR 4227. It's not a big cartridge and it's not a ball powder but I got the best accuracy with that combination. As for having to use magnum primers with ball powders, I doubt it. I've always ignored that rule and have never had a problem. [/QUOTE]
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Standard primers in magnum cartridges?
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