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Rifles, Reloading, Optics, Equipment
Reloading
? on group size and yardage
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<blockquote data-quote="FearNoWind" data-source="post: 955155" data-attributes="member: 50867"><p>I only use 100 yards to get on paper. IMO, the data of a 100 yard sample isn't reliable enough to rely upon for long ranges.</p><p>After I have it on paper and grouping fairly well (typically - .5 MOA) I move to 300 yards for ladder testing. The ladder test results gives me the most reliable data and I tune my load (including seating depth adjustments) for - 1 MOA at 300 yards. From there I take 'em out, progressively, to 1K using reliable ballistics data based on calculations from actual range results and not some standard ballistics programs.</p><p>I tested 3 loads last week, each .1 grains difference. The first 100 yard group was 1.059, the second (.1 grains heavier) was .891, and the third (another .1 grain heavier) .572. That's the starting point for the ladder test on this load.</p></blockquote><p></p>
[QUOTE="FearNoWind, post: 955155, member: 50867"] I only use 100 yards to get on paper. IMO, the data of a 100 yard sample isn't reliable enough to rely upon for long ranges. After I have it on paper and grouping fairly well (typically - .5 MOA) I move to 300 yards for ladder testing. The ladder test results gives me the most reliable data and I tune my load (including seating depth adjustments) for - 1 MOA at 300 yards. From there I take 'em out, progressively, to 1K using reliable ballistics data based on calculations from actual range results and not some standard ballistics programs. I tested 3 loads last week, each .1 grains difference. The first 100 yard group was 1.059, the second (.1 grains heavier) was .891, and the third (another .1 grain heavier) .572. That's the starting point for the ladder test on this load. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
? on group size and yardage
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