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Rifles, Reloading, Optics, Equipment
Reloading
Help with velocity variance
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<blockquote data-quote="SBruce" data-source="post: 453961" data-attributes="member: 21068"><p><strong>Question:</strong> Did you weight sort and uniform any of the brass prior to testing?</p><p> </p><p>If not, that's likely the problem. If that's the case, I'd try that before the annealing. There appear to be some weights of cases that I would sort out if it was me. </p><p> </p><p>What kind of primer are you using? Cooler primers often give lower ES's. Due to the higher than expected velocity you mentioned, I am assuming you're using a fairly hot primer..........magnum primers by any chance? Match primers are usually some of the cooler ones and more consistent. Even normal large rifle primers might be more consistant.</p><p> </p><p>Neck thickness can be a factor also. If the neck thickness is uniform, you'll get better ES's too. This also applies to neck or case length. Uniform lengths are important, as are uniform primer pockets and flash holes.</p><p> </p><p>IMO, these steps all contribute to low ES's and consistency of your loaded round.</p><p> </p><p>IMO, annealing cases that aren't consistant size and weight is a waste of time.</p></blockquote><p></p>
[QUOTE="SBruce, post: 453961, member: 21068"] [B]Question:[/B] Did you weight sort and uniform any of the brass prior to testing? If not, that's likely the problem. If that's the case, I'd try that before the annealing. There appear to be some weights of cases that I would sort out if it was me. What kind of primer are you using? Cooler primers often give lower ES's. Due to the higher than expected velocity you mentioned, I am assuming you're using a fairly hot primer..........magnum primers by any chance? Match primers are usually some of the cooler ones and more consistent. Even normal large rifle primers might be more consistant. Neck thickness can be a factor also. If the neck thickness is uniform, you'll get better ES's too. This also applies to neck or case length. Uniform lengths are important, as are uniform primer pockets and flash holes. IMO, these steps all contribute to low ES's and consistency of your loaded round. IMO, annealing cases that aren't consistant size and weight is a waste of time. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Help with velocity variance
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