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Load Tuning By Jerry Teo
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<blockquote data-quote="Mikecr" data-source="post: 442749" data-attributes="member: 1521"><p>I see just the opposite.</p><p>I see optimum seating depth as a prerequisite to further load development, as best seating depth is so regardless of load.</p><p>That is, changing powder type or amount of it, does not change best seating. That remains right where it happens to be. So if you're going on to powder adjustments, you should do so at the right seating depth, as determined earlier.</p><p></p><p>Also, with atleast 3 of my guns, no amount of powder change can demolish grouping like seating changes. I can go from 1/4moa to nearly a full moa with seating adjustments. At the very ugliest, powder changes alone only take to me out to a bit over 1/2moa.</p><p></p><p>Even bigger still, can be primers, or I should say, incorrect striking of primers..</p><p>We try different primers with no particular plan or understanding of why. But a firing pin strike can be adjusted beyond 'adequate', and may be best or worst for one primer or another.</p><p></p><p>Personally, I think shooters have load development all backwards. </p><p>Maybe I'll prove this one day.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 442749, member: 1521"] I see just the opposite. I see optimum seating depth as a prerequisite to further load development, as best seating depth is so regardless of load. That is, changing powder type or amount of it, does not change best seating. That remains right where it happens to be. So if you're going on to powder adjustments, you should do so at the right seating depth, as determined earlier. Also, with atleast 3 of my guns, no amount of powder change can demolish grouping like seating changes. I can go from 1/4moa to nearly a full moa with seating adjustments. At the very ugliest, powder changes alone only take to me out to a bit over 1/2moa. Even bigger still, can be primers, or I should say, incorrect striking of primers.. We try different primers with no particular plan or understanding of why. But a firing pin strike can be adjusted beyond 'adequate', and may be best or worst for one primer or another. Personally, I think shooters have load development all backwards. Maybe I'll prove this one day. [/QUOTE]
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