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Hunting
Long Range Hunting & Shooting
What would cause this? Bullet drop with elevation change
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<blockquote data-quote="Bang4theBuck" data-source="post: 2047253" data-attributes="member: 73596"><p>My opinion is that there are multiple possible causes for the poi shift. I dont believe that air density had anything to do with the 2" poi shift at 100 yds. I believe that it was technique. It was either the rest, or something affecting barrel harmonics. First, technique.....how many times have we been on hunts or at fun shoots and you have an improvised rest of some sort? Once the first guy in a group of buddies sets up a certain way and takes a shot (across the hood, on the tailgate, with/without a lead sled, across a backpack, etc) and then the rest of your buds do the same thing, as it seemed to work. This could explain why everyone in the group was low at 100 yds. As for being low at 300 yds, this needs to be looked at from two perspectives. First adjust your zero to be right on at 100. Now check your impact at 300. If 90+% of your issue is gone....great! Now just analyze what it causing the 10% shift at 300. All of the possibilities related to environmentals and internal ballistics are potentially relevant again in solving the problem at that point.</p></blockquote><p></p>
[QUOTE="Bang4theBuck, post: 2047253, member: 73596"] My opinion is that there are multiple possible causes for the poi shift. I dont believe that air density had anything to do with the 2" poi shift at 100 yds. I believe that it was technique. It was either the rest, or something affecting barrel harmonics. First, technique.....how many times have we been on hunts or at fun shoots and you have an improvised rest of some sort? Once the first guy in a group of buddies sets up a certain way and takes a shot (across the hood, on the tailgate, with/without a lead sled, across a backpack, etc) and then the rest of your buds do the same thing, as it seemed to work. This could explain why everyone in the group was low at 100 yds. As for being low at 300 yds, this needs to be looked at from two perspectives. First adjust your zero to be right on at 100. Now check your impact at 300. If 90+% of your issue is gone....great! Now just analyze what it causing the 10% shift at 300. All of the possibilities related to environmentals and internal ballistics are potentially relevant again in solving the problem at that point. [/QUOTE]
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What would cause this? Bullet drop with elevation change
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