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Rifles, Reloading, Optics, Equipment
Reloading
Ladder test/accuracy and velocity ES
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<blockquote data-quote="jrock" data-source="post: 941086" data-attributes="member: 78569"><p>I recently did two ladder tests on two different days with diffing weather conditions. Once I brought the data back to the "lab", I noticed that the groupings were about the same regardless of weather...no surprise there. I found that the most accurate group for my .243 shooting 100 gr Hornady Interlocks was 43.0 grs of IMR4350. Less than 2" group at 400 yards. It had a velocity ES of 30 fps or so. Reading some articles online, they suggest a much lower ES for long range shooting. I dove into my data some more and discovered that the 42.8 gr charge had an ES of less than 5 fps yet grouped 4" at 400 yards on both days. </p><p> </p><p>Any thoughts on what path I should take? It seems to me that consistently tight groups would be the ticket and just toss the velocity ES data.</p></blockquote><p></p>
[QUOTE="jrock, post: 941086, member: 78569"] I recently did two ladder tests on two different days with diffing weather conditions. Once I brought the data back to the "lab", I noticed that the groupings were about the same regardless of weather...no surprise there. I found that the most accurate group for my .243 shooting 100 gr Hornady Interlocks was 43.0 grs of IMR4350. Less than 2" group at 400 yards. It had a velocity ES of 30 fps or so. Reading some articles online, they suggest a much lower ES for long range shooting. I dove into my data some more and discovered that the 42.8 gr charge had an ES of less than 5 fps yet grouped 4" at 400 yards on both days. Any thoughts on what path I should take? It seems to me that consistently tight groups would be the ticket and just toss the velocity ES data. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Ladder test/accuracy and velocity ES
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