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Hunting
Long Range Hunting & Shooting
Extreme spread and standard deviation vs accuracy
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<blockquote data-quote="southernfella" data-source="post: 2922322" data-attributes="member: 127789"><p>Hey folks, I'm working on my first load ever and and running into an interesting problem I can't seem to find answers for. </p><p></p><p>I started with 3 loads out of the Hornady reloading vol.10 book and the very first group of 5 was touching, the second group of 5 had 4 almost in the same hole and one flyer that made the group almost 1". I'm shooting 143gr ELD-X out of a 6.5PRC savage ultralight with the proof carbon wrapped barrel.</p><p></p><p>Chronograph only caught 4 of 5 and didn't work at all the first group 51.6gr IMR4831</p><p></p><p>2774</p><p>2788</p><p>2797</p><p>2750</p><p></p><p>BUT when I tried a hotter load with the most consistent velocity out of the 3, it gave me 1 inch groups both times. 52.7gr IMR4831</p><p></p><p>2892</p><p>2885</p><p>2885</p><p>2886</p><p>2883</p><p></p><p></p><p>2876</p><p>2874</p><p>2877</p><p>2877</p><p>2905</p><p></p><p>I'm totally stumped. I'm thinking building a ladder off of the first load to try to minimize es and SD, is this the right course of action? Or do I build off of the one with consistent velocity and hope to find a node there?</p></blockquote><p></p>
[QUOTE="southernfella, post: 2922322, member: 127789"] Hey folks, I'm working on my first load ever and and running into an interesting problem I can't seem to find answers for. I started with 3 loads out of the Hornady reloading vol.10 book and the very first group of 5 was touching, the second group of 5 had 4 almost in the same hole and one flyer that made the group almost 1". I'm shooting 143gr ELD-X out of a 6.5PRC savage ultralight with the proof carbon wrapped barrel. Chronograph only caught 4 of 5 and didn't work at all the first group 51.6gr IMR4831 2774 2788 2797 2750 BUT when I tried a hotter load with the most consistent velocity out of the 3, it gave me 1 inch groups both times. 52.7gr IMR4831 2892 2885 2885 2886 2883 2876 2874 2877 2877 2905 I'm totally stumped. I'm thinking building a ladder off of the first load to try to minimize es and SD, is this the right course of action? Or do I build off of the one with consistent velocity and hope to find a node there? [/QUOTE]
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Extreme spread and standard deviation vs accuracy
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