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Long Range Hunting & Shooting
Group size vs ES
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<blockquote data-quote="Okanogan" data-source="post: 1655527" data-attributes="member: 90397"><p>Results published in Modern Advancements in Long Range Shooting Vol 2, tend to suggest that annealing will probably not solve a ES/SD problem. I haven't noticed much improvement myself when using my Annie induction set up though others have reported different individual experiences as noted above.</p><p></p><p>If you're happy with group size, I would suggest holding COAL/ seating depth and trying slightly higher/ lower powder weight and/ or primer combinations that produce roughly similar velocities. I have noticed across a variety of calibers that varying these parameters up/ down can result in a moderate change in ES/SD. If I thought I had really bad ES/SDs I would try a different powder and try initially to match velocity to the accurate load. The above approach is roughly similar to what I believe Adam MacDonald of Autotrickler fame suggested in one of his early blog posts.</p><p></p><p>I have only owned a Magnetospeed and a Labradar so I can't really offer much insight into reliability of the classic units. If the option exists to borrow another chrono and see if you get similar results then that would be an easy choice for a load that already groups well.</p></blockquote><p></p>
[QUOTE="Okanogan, post: 1655527, member: 90397"] Results published in Modern Advancements in Long Range Shooting Vol 2, tend to suggest that annealing will probably not solve a ES/SD problem. I haven't noticed much improvement myself when using my Annie induction set up though others have reported different individual experiences as noted above. If you're happy with group size, I would suggest holding COAL/ seating depth and trying slightly higher/ lower powder weight and/ or primer combinations that produce roughly similar velocities. I have noticed across a variety of calibers that varying these parameters up/ down can result in a moderate change in ES/SD. If I thought I had really bad ES/SDs I would try a different powder and try initially to match velocity to the accurate load. The above approach is roughly similar to what I believe Adam MacDonald of Autotrickler fame suggested in one of his early blog posts. I have only owned a Magnetospeed and a Labradar so I can't really offer much insight into reliability of the classic units. If the option exists to borrow another chrono and see if you get similar results then that would be an easy choice for a load that already groups well. [/QUOTE]
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