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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
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<blockquote data-quote="ShtrRdy" data-source="post: 1532031" data-attributes="member: 40852"><p>What cartridge are you shooting?</p><p></p><p>0.5 gr increments are okay for cartridges that use over 50 gr of powder</p><p></p><p>After firing the different charge weights choose one that gives the best groups and load a few at -0.2 gr and a few a +0.2 gr and fire those.</p><p></p><p>Decide on which charge weight gives you the best groups and load up 14 rounds. Fire 5 rounds across a chrono and shoot three 3-shot groups. If this step looks reasonable use the average velocity in your ballistics program.</p><p></p><p>When I go out to verify drops I like to walk ot out in 100 yd steps.</p></blockquote><p></p>
[QUOTE="ShtrRdy, post: 1532031, member: 40852"] What cartridge are you shooting? 0.5 gr increments are okay for cartridges that use over 50 gr of powder After firing the different charge weights choose one that gives the best groups and load a few at -0.2 gr and a few a +0.2 gr and fire those. Decide on which charge weight gives you the best groups and load up 14 rounds. Fire 5 rounds across a chrono and shoot three 3-shot groups. If this step looks reasonable use the average velocity in your ballistics program. When I go out to verify drops I like to walk ot out in 100 yd steps. [/QUOTE]
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