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Long Range Hunting & Shooting
effects of altitude on loads
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<blockquote data-quote="SBruce" data-source="post: 434018" data-attributes="member: 21068"><p>I can't speak from experience on groups opening, because I've always shot at nearly the same altitudes (not the 6 to 8 K feet you mentioned anyway) But I do know for a fact that the higher altitudes will change your sight in.</p><p> </p><p>A friend recently brought his new Edge out from Illinois. It was zero'd exactly at 100 yds in Illinois, but out here; it was 3/4 inch high at 100 yds. The drops out to 600 yds had been confirmed too in IL, but changed once here. (We're assuming that the scope didn't get banged in transport) Even after changing the distance the rifle was zero'd for (in the program) drops still didn't quite match the ballistic programs. We're still trying to figure that part out!! </p><p> </p><p> I doubt that many folks are changing their load because of altitude, and am too curious as to if any bring their chronograph along.</p></blockquote><p></p>
[QUOTE="SBruce, post: 434018, member: 21068"] I can't speak from experience on groups opening, because I've always shot at nearly the same altitudes (not the 6 to 8 K feet you mentioned anyway) But I do know for a fact that the higher altitudes will change your sight in. A friend recently brought his new Edge out from Illinois. It was zero'd exactly at 100 yds in Illinois, but out here; it was 3/4 inch high at 100 yds. The drops out to 600 yds had been confirmed too in IL, but changed once here. (We're assuming that the scope didn't get banged in transport) Even after changing the distance the rifle was zero'd for (in the program) drops still didn't quite match the ballistic programs. We're still trying to figure that part out!! I doubt that many folks are changing their load because of altitude, and am too curious as to if any bring their chronograph along. [/QUOTE]
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effects of altitude on loads
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