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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
primers make a difference!
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<blockquote data-quote="J E Custom" data-source="post: 1445444" data-attributes="member: 2736"><p>No doubt about it.</p><p></p><p>The best primer is the one that gets the best out of a particular powder, cartridge case volume, bullet type and weight. Change any component, and another primer may get better SDs and group size.</p><p></p><p>When I am working up loads, I use a chronograph to find the best SD. after finding a good SD (any load with single digit SDs in my opinion is a good one) this way of testing tells me that I have a good powder charge</p><p>for the case capacity and the bullet weight. The lower the SD, the more efficient/consistent the powder burn.</p><p></p><p>After getting the low SDs then I can try different primers with the same Bristance to see If the Sds will improve or degrade. I have found many times that one brand outperforms another even if only by a few SD.</p><p></p><p>This is the reason I don't limit myself to one primer.</p><p>Some primers have the ability to ignite certain powders better than others, so as the Rich demonstrates it can make a huge difference in both SDs and accuracy.</p><p></p><p>I have also found that cartridges that normally call for magnum primers, sometimes get much better SDs using large rifle primers.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1445444, member: 2736"] No doubt about it. The best primer is the one that gets the best out of a particular powder, cartridge case volume, bullet type and weight. Change any component, and another primer may get better SDs and group size. When I am working up loads, I use a chronograph to find the best SD. after finding a good SD (any load with single digit SDs in my opinion is a good one) this way of testing tells me that I have a good powder charge for the case capacity and the bullet weight. The lower the SD, the more efficient/consistent the powder burn. After getting the low SDs then I can try different primers with the same Bristance to see If the Sds will improve or degrade. I have found many times that one brand outperforms another even if only by a few SD. This is the reason I don't limit myself to one primer. Some primers have the ability to ignite certain powders better than others, so as the Rich demonstrates it can make a huge difference in both SDs and accuracy. I have also found that cartridges that normally call for magnum primers, sometimes get much better SDs using large rifle primers. J E CUSTOM [/QUOTE]
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primers make a difference!
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