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Rifles, Reloading, Optics, Equipment
Reloading
Testing primers
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<blockquote data-quote="Dean2" data-source="post: 1676936" data-attributes="member: 26077"><p>Keep the load exactly the same and just switch primers, assuming you aren't loaded on the ragged edge of pressure. Fire them across a chrono and measure ES/SD. Realistically, in a 338 NM or Lapua your choices are Fed 215 or Win Mag. The CCI 250s don't have enough Kapusta for loads over 70 grains. (Not to go into great detail but too many click booms, delayed ignition, or failure to ignite. Get burnt clumped powder but no boom.) If your current load has good ES/SD now, why bother since you seem worried about the component costs. Neck tension and case fill are far more likely to affect ES than the primer.</p></blockquote><p></p>
[QUOTE="Dean2, post: 1676936, member: 26077"] Keep the load exactly the same and just switch primers, assuming you aren't loaded on the ragged edge of pressure. Fire them across a chrono and measure ES/SD. Realistically, in a 338 NM or Lapua your choices are Fed 215 or Win Mag. The CCI 250s don't have enough Kapusta for loads over 70 grains. (Not to go into great detail but too many click booms, delayed ignition, or failure to ignite. Get burnt clumped powder but no boom.) If your current load has good ES/SD now, why bother since you seem worried about the component costs. Neck tension and case fill are far more likely to affect ES than the primer. [/QUOTE]
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Testing primers
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