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Rifles, Reloading, Optics, Equipment
Reloading
MATCH Primer Ignorance
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<blockquote data-quote="biednick" data-source="post: 3080091" data-attributes="member: 123604"><p>CCI BR4s are magnums like 450s and 41s. I'm not sure about other brands. </p><p></p><p>Switching from 400s to 41s, 450s, or BR4s has given me better velocity consistency and better groups in a few cases, especially with ball powders. I haven't seen a change in precision from any other primer swap with enough rounds to mean anything. </p><p></p><p>When you're chasing the amount of precision you could potentially squeeze out of changing primers using 3, 5, or 10 shot groups is basically equivalent to random guessing. If you're not interested in shooting 25-30 rounds to test it you're better off picking the primer that's available and saving some time and components.</p></blockquote><p></p>
[QUOTE="biednick, post: 3080091, member: 123604"] CCI BR4s are magnums like 450s and 41s. I'm not sure about other brands. Switching from 400s to 41s, 450s, or BR4s has given me better velocity consistency and better groups in a few cases, especially with ball powders. I haven't seen a change in precision from any other primer swap with enough rounds to mean anything. When you're chasing the amount of precision you could potentially squeeze out of changing primers using 3, 5, or 10 shot groups is basically equivalent to random guessing. If you're not interested in shooting 25-30 rounds to test it you're better off picking the primer that's available and saving some time and components. [/QUOTE]
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MATCH Primer Ignorance
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