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Rifles, Reloading, Optics, Equipment
Reloading
Optimal Charge Weight Load Development
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<blockquote data-quote="Mikecr" data-source="post: 1343048" data-attributes="member: 1521"><p>I'll say the same on this as always. Before testing, the brass needs to be fully fire formed to your chamber. Also, your bullet seating needs to be at least close to best, as tested, for powder result interpretation to be valid.</p><p>If your seating happens to be at a worst place, which it could be if merely pulling a COAL out of your butt,, then you could spray bullets to the point of never finding best.</p><p></p><p>Berger's full seating testing has you back off a bit from relatively stiff load, and this also tends to back away from best load. That's good because you don't want a best load collapsing while also trying to determine best seating. You really want the very worst powder load for seating testing, so that you're just seeing what seating adjustments are doing alone.</p><p></p><p>So, you can do full seating testing -while fire forming brass, and then move into powder testing with formed brass and rough best seating. Should improve your OCW grouping, as it should also for ladders.</p><p>After finding your best powder, then return to fine tweaking of seating to shape grouping(that's all you're doing there).</p><p>At this point you'll either have an acceptable combination, or not.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1343048, member: 1521"] I'll say the same on this as always. Before testing, the brass needs to be fully fire formed to your chamber. Also, your bullet seating needs to be at least close to best, as tested, for powder result interpretation to be valid. If your seating happens to be at a worst place, which it could be if merely pulling a COAL out of your butt,, then you could spray bullets to the point of never finding best. Berger's full seating testing has you back off a bit from relatively stiff load, and this also tends to back away from best load. That's good because you don't want a best load collapsing while also trying to determine best seating. You really want the very worst powder load for seating testing, so that you're just seeing what seating adjustments are doing alone. So, you can do full seating testing -while fire forming brass, and then move into powder testing with formed brass and rough best seating. Should improve your OCW grouping, as it should also for ladders. After finding your best powder, then return to fine tweaking of seating to shape grouping(that's all you're doing there). At this point you'll either have an acceptable combination, or not. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Optimal Charge Weight Load Development
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