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Rifles, Reloading, Optics, Equipment
Reloading
Load Testing Which Group to Use?
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<blockquote data-quote="Bart B" data-source="post: 674555" data-attributes="member: 5302"><p>I don't think there's enough shots per test group to be meaningful. 3-shot groups are only about 50% reliable to reflect what their load will do all the time.</p><p></p><p>Shoot at least 15 shots per group. They'll be over 80% meaningful.</p><p></p><p>Basic rule of meaningful accuracy is to shoot enough shots with a given load so every time you do it, the groups are all the same size. If all the groups of a given load ain't the same size, you're not shooting enough shots in each group for it to be 100% meaningful. So 15 shots per group is good and 20 even better. For example, instead of shooting four 5-shot groups with a load, shoot all 20 shots into the same group.</p></blockquote><p></p>
[QUOTE="Bart B, post: 674555, member: 5302"] I don't think there's enough shots per test group to be meaningful. 3-shot groups are only about 50% reliable to reflect what their load will do all the time. Shoot at least 15 shots per group. They'll be over 80% meaningful. Basic rule of meaningful accuracy is to shoot enough shots with a given load so every time you do it, the groups are all the same size. If all the groups of a given load ain't the same size, you're not shooting enough shots in each group for it to be 100% meaningful. So 15 shots per group is good and 20 even better. For example, instead of shooting four 5-shot groups with a load, shoot all 20 shots into the same group. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Load Testing Which Group to Use?
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