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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Primers for 300 RUM w Retumbo
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<blockquote data-quote="Derek M." data-source="post: 34715" data-attributes="member: 2693"><p>Excellent question.</p><p></p><p>Obviously magnum cartridges do great with magnum primers, however, there is the issue of consistency.</p><p></p><p>You may find that using a regular primer like Fed. 210 match, the powder burns very evenly and uniformly. </p><p></p><p>I tried this when I noticed some pressure signs using Retumbo. I was getting 1/2" 3 shot groups but #4 and #5 shots were expanding to 1". </p><p></p><p>When I switched to the regular large rifle primer, the pressure went way down, I added powder, and got even better groups. But I do have a 28" barrel.</p><p></p><p>Good luck, and good shooting!</p></blockquote><p></p>
[QUOTE="Derek M., post: 34715, member: 2693"] Excellent question. Obviously magnum cartridges do great with magnum primers, however, there is the issue of consistency. You may find that using a regular primer like Fed. 210 match, the powder burns very evenly and uniformly. I tried this when I noticed some pressure signs using Retumbo. I was getting 1/2" 3 shot groups but #4 and #5 shots were expanding to 1". When I switched to the regular large rifle primer, the pressure went way down, I added powder, and got even better groups. But I do have a 28" barrel. Good luck, and good shooting! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Primers for 300 RUM w Retumbo
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