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Rifles, Reloading, Optics, Equipment
Reloading
Newbie Load Development Question - How many rounds and how many grain increments?
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<blockquote data-quote="Bart B" data-source="post: 1143890" data-attributes="member: 5302"><p>How credible is one group to represent real accuracy level?</p><p></p><p>Single group size times max/min multiplier equals approximate size limits of 19 out of 20 groups fired with different numbers of shots per group. </p><p></p><p>Shots/ Multipliers</p><p>Group Max ......Min</p><p> 3 ..... 2.45 ..... .40</p><p> 5 ..... 1.53 ..... .67</p><p> 10 .... 1.27 ..... .81</p><p> 20 .... 1.12 ..... .89</p><p> 30 .... 1.09 ..... .92</p><p> 50 .... 1.06 ..... .95</p><p></p><p>Examples:</p><p></p><p>If first 5-shot group is 1 inch extreme spread, 19 out of 20 will be from 1.53 inch to .67 inch. </p><p></p><p>If first 3-shot group is 1 inch extreme spread, 19 out of 20 will be from 2.45 inch to .40 inch.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1143890, member: 5302"] How credible is one group to represent real accuracy level? Single group size times max/min multiplier equals approximate size limits of 19 out of 20 groups fired with different numbers of shots per group. Shots/ Multipliers Group Max ......Min 3 ..... 2.45 ..... .40 5 ..... 1.53 ..... .67 10 .... 1.27 ..... .81 20 .... 1.12 ..... .89 30 .... 1.09 ..... .92 50 .... 1.06 ..... .95 Examples: If first 5-shot group is 1 inch extreme spread, 19 out of 20 will be from 1.53 inch to .67 inch. If first 3-shot group is 1 inch extreme spread, 19 out of 20 will be from 2.45 inch to .40 inch. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Newbie Load Development Question - How many rounds and how many grain increments?
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