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Rifles, Reloading, Optics, Equipment
Reloading
Purpose of bullet jump
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<blockquote data-quote="Mikecr" data-source="post: 1794698" data-attributes="member: 1521"><p>Yes, I do full seating and primer testing while fire forming brass (if new).</p><p>Brass needs to be fully fire formed to stable before moving on to powder.</p><p>By 'stable' I'm not just referring to static capacity but also to dynamic capacity, which has a significant affect to the shaping of your pressure peaks. Your timing.</p><p></p><p>When my brass is already FF'd, and I already know a best powder load for a bullet weight, but now testing different bullets or primers, I back off the charge -considerably away from any powder node for this testing.</p><p>I don't want a powder node collapsing/forming at the same time that I'm trying to assess seating or primer results.</p><p></p><p>Seating and primers are prerequisite. Case chamber fit & load density are coarse to results. Powder, neck tension, and final seating tweaking(within window) are fine to results.</p><p></p><p>Your powder testing is likely one or the other of two paths: a forgiving OCW, or cutting edge precision. It's rare to have both, but if you follow my order in this your chances are better.</p><p>You need to reach either before moving onward to accuracy, which is single shot adjustments from hot bore results to cold bore desire.</p><p>I've yet to see a load at best precision AND best accuracy at once.</p><p>It likely leads to a choice; one or the other, or good enough or not.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1794698, member: 1521"] Yes, I do full seating and primer testing while fire forming brass (if new). Brass needs to be fully fire formed to stable before moving on to powder. By 'stable' I'm not just referring to static capacity but also to dynamic capacity, which has a significant affect to the shaping of your pressure peaks. Your timing. When my brass is already FF'd, and I already know a best powder load for a bullet weight, but now testing different bullets or primers, I back off the charge -considerably away from any powder node for this testing. I don't want a powder node collapsing/forming at the same time that I'm trying to assess seating or primer results. Seating and primers are prerequisite. Case chamber fit & load density are coarse to results. Powder, neck tension, and final seating tweaking(within window) are fine to results. Your powder testing is likely one or the other of two paths: a forgiving OCW, or cutting edge precision. It's rare to have both, but if you follow my order in this your chances are better. You need to reach either before moving onward to accuracy, which is single shot adjustments from hot bore results to cold bore desire. I've yet to see a load at best precision AND best accuracy at once. It likely leads to a choice; one or the other, or good enough or not. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Purpose of bullet jump
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