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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Two primers different results
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<blockquote data-quote="Alex Wheeler" data-source="post: 1453593" data-attributes="member: 101859"><p>Round robin is good for ladder tests to try a spread condition changes out over the whole ladder, which should be fired as fast as possible. If your shooting groups, round robin is going to induce so much more condition related error in your groups. I highly recommend shooting each group in a condition and as quick as possible to mitigate condition changes. Its not just wind, lighting and other environmentals that change play a role. When testing primers, they can take you out of your accuracy node. So once you have tested them all, you need to see the velocity changes they caused, then go back and adjust powder charges to bring each of them back into the accuracy node. Then shoot them again. Obviously if a primer changes velocity 30 fps its not going to group as well as the one you tuned the gun on. But it may shoot better if you adjust the powder to bring it back.</p></blockquote><p></p>
[QUOTE="Alex Wheeler, post: 1453593, member: 101859"] Round robin is good for ladder tests to try a spread condition changes out over the whole ladder, which should be fired as fast as possible. If your shooting groups, round robin is going to induce so much more condition related error in your groups. I highly recommend shooting each group in a condition and as quick as possible to mitigate condition changes. Its not just wind, lighting and other environmentals that change play a role. When testing primers, they can take you out of your accuracy node. So once you have tested them all, you need to see the velocity changes they caused, then go back and adjust powder charges to bring each of them back into the accuracy node. Then shoot them again. Obviously if a primer changes velocity 30 fps its not going to group as well as the one you tuned the gun on. But it may shoot better if you adjust the powder to bring it back. [/QUOTE]
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Two primers different results
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