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Hunting
Long Range Hunting & Shooting
Opinions on Repeating a good Load , ES, SD , Velocity, Grouping
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<blockquote data-quote="JTB" data-source="post: 1642478" data-attributes="member: 97196"><p>Grouping sizes fluctuate a little on me also. I have always contributed it to the wind changes, barrel condition and maybe I am a little off my game. Early morning always seems to produce the best groupings as no heat waves to blur the target and minimal wind. That being said I always work up my hunting loads immediately prior to going out to make sure they are grouping well. When I am comfortable with grouping size I leave the barrel in the same condition it was when I finished working up the loads. Normally they group best for me after about 10 rounds through a cleaned barrel but they are all a little different. One thing that helps me is to run a ladder test to find where the stable velocity range is. Normally you will find charges within about 1 grain range to produce similar velocities and POI. I try to stay in the middle of that range to give me that margin of error to work with. If the powder charge or temperature varies slightly I won't be as likely to see the POI change.</p></blockquote><p></p>
[QUOTE="JTB, post: 1642478, member: 97196"] Grouping sizes fluctuate a little on me also. I have always contributed it to the wind changes, barrel condition and maybe I am a little off my game. Early morning always seems to produce the best groupings as no heat waves to blur the target and minimal wind. That being said I always work up my hunting loads immediately prior to going out to make sure they are grouping well. When I am comfortable with grouping size I leave the barrel in the same condition it was when I finished working up the loads. Normally they group best for me after about 10 rounds through a cleaned barrel but they are all a little different. One thing that helps me is to run a ladder test to find where the stable velocity range is. Normally you will find charges within about 1 grain range to produce similar velocities and POI. I try to stay in the middle of that range to give me that margin of error to work with. If the powder charge or temperature varies slightly I won’t be as likely to see the POI change. [/QUOTE]
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Opinions on Repeating a good Load , ES, SD , Velocity, Grouping
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