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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Altitude and its effects
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<blockquote data-quote="Black Diamond 408" data-source="post: 223184" data-attributes="member: 1563"><p>You better have a good balistic program like Exbal to reference. I sighted in my rifle here at 1400' and took it to 6000 and it still was dead on at 100yds, from there you need a program that will calculate the elevation changes. The Eskimo program works well for a general drop chart, but hard to input changes if its not with you. My rifle has a drop of 17 moa @ 1000yds where i live in Neb. The same loads in Wyo at 6000' changed to 15.5 moa, 1000yds. I made drop charts before i left home and found they were close, but not close enough when your talking long ranges.</p><p></p><p>There is no substitute for real testing. I have found Exbal to be very acurate as long as you know all the weather perameters.</p><p></p><p>Dave</p></blockquote><p></p>
[QUOTE="Black Diamond 408, post: 223184, member: 1563"] You better have a good balistic program like Exbal to reference. I sighted in my rifle here at 1400' and took it to 6000 and it still was dead on at 100yds, from there you need a program that will calculate the elevation changes. The Eskimo program works well for a general drop chart, but hard to input changes if its not with you. My rifle has a drop of 17 moa @ 1000yds where i live in Neb. The same loads in Wyo at 6000' changed to 15.5 moa, 1000yds. I made drop charts before i left home and found they were close, but not close enough when your talking long ranges. There is no substitute for real testing. I have found Exbal to be very acurate as long as you know all the weather perameters. Dave [/QUOTE]
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Altitude and its effects
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