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Rifles, Reloading, Optics, Equipment
Reloading
Primers can make a difference.
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<blockquote data-quote="Hard H2O" data-source="post: 3045885" data-attributes="member: 65774"><p>But for a subject that says "Primers can make a difference" not sure how the test and data supports that.</p><p></p><p>Still if he meant to compare the effects of the different primers he needed to isolate the primers and not have the variance in the powder charge. You essentially have a sample size of one in ten different rounds.</p><p></p><p>Need a larger sample size of one load to compare against a larger sample size of another load. Or at least have a larger sample of each of 5 loads in each of the two primers.</p><p></p><p>If you take one load, one shot with one primer and the same load, one shot with a different primer you learn nothing. Too much chance for shooter error.</p><p></p><p>One primer with 5 different powder charges had:</p><p>3693 fps</p><p>3699 fps</p><p>3764 fps</p><p>3925 fps</p><p></p><p>The other primer with 5 different loads had:</p><p>3647 fps</p><p>3659 fps</p><p>3712 fps</p><p>3748 fps</p><p>3871 fps</p><p></p><p>A bit over 200 fps from lowest to highest with each primer.</p><p></p><p>Not sure what one can extrapolate from the data other than one would need more data.</p></blockquote><p></p>
[QUOTE="Hard H2O, post: 3045885, member: 65774"] But for a subject that says "Primers can make a difference" not sure how the test and data supports that. Still if he meant to compare the effects of the different primers he needed to isolate the primers and not have the variance in the powder charge. You essentially have a sample size of one in ten different rounds. Need a larger sample size of one load to compare against a larger sample size of another load. Or at least have a larger sample of each of 5 loads in each of the two primers. If you take one load, one shot with one primer and the same load, one shot with a different primer you learn nothing. Too much chance for shooter error. One primer with 5 different powder charges had: 3693 fps 3699 fps 3764 fps 3925 fps The other primer with 5 different loads had: 3647 fps 3659 fps 3712 fps 3748 fps 3871 fps A bit over 200 fps from lowest to highest with each primer. Not sure what one can extrapolate from the data other than one would need more data. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Primers can make a difference.
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