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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Technical question for all of you who know what you are doing
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<blockquote data-quote="BlackStreak" data-source="post: 657070" data-attributes="member: 33144"><p>I would double check the inputs into the ballistic calculator. Re-shoot through a choronagraph numerous times on a couple different days or double check one chronagraph with another if you have access to two of them. Make sure your using the G7 BC and the correct G7 BC give for the particular bullet your shooting. Plus the atmospheric conditions such as InHg inputs affect point of impact in a huge manner. If all your inputs have been confirmed correct and your distance to the target is correct, then I'd start blaming the scope. </p><p> For shooting distances approaching 1000 yards and more, a scope level that's true to the verticle reticule is a must because any cant will cause a lower POI. </p><p> I validate my scope adjustments not through a ruler but by shooting 5 shots at 100 yards. Then adjust up 10 MOA and shoot 5 more shoes at the same point of original aim. Then agjust up 10 more MOA. Again use the original aim point. This will show you two things. Your groups should be in straight up from one another, if not your level isn't true with the scope. Then measure the distance between the center of the groups. Then divide the distance between each group by your 40 clicks used to adjust up 10 MOA. Sometimes the value of one click in the first 10 MOA is has more or less value than the clicks in the second 10 MOA.</p></blockquote><p></p>
[QUOTE="BlackStreak, post: 657070, member: 33144"] I would double check the inputs into the ballistic calculator. Re-shoot through a choronagraph numerous times on a couple different days or double check one chronagraph with another if you have access to two of them. Make sure your using the G7 BC and the correct G7 BC give for the particular bullet your shooting. Plus the atmospheric conditions such as InHg inputs affect point of impact in a huge manner. If all your inputs have been confirmed correct and your distance to the target is correct, then I'd start blaming the scope. For shooting distances approaching 1000 yards and more, a scope level that's true to the verticle reticule is a must because any cant will cause a lower POI. I validate my scope adjustments not through a ruler but by shooting 5 shots at 100 yards. Then adjust up 10 MOA and shoot 5 more shoes at the same point of original aim. Then agjust up 10 more MOA. Again use the original aim point. This will show you two things. Your groups should be in straight up from one another, if not your level isn't true with the scope. Then measure the distance between the center of the groups. Then divide the distance between each group by your 40 clicks used to adjust up 10 MOA. Sometimes the value of one click in the first 10 MOA is has more or less value than the clicks in the second 10 MOA. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Technical question for all of you who know what you are doing
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