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    Rifle Scopes Change scope zero with altitude change

    Cogent Answer I understand your answer. My knowledge has been enhanced. I will no longer worry about bullet impact at the altitudes that I am likely to encounter. Many “Thanks” to all. This thread may now be terminated.
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    Rifle Scopes Change scope zero with altitude change

    Bullets are hitting the bullseye at 200 yards at altitude of 5,500 feet. Scope elevation knob is set to zero. If I do not change the scope elevation knob; then, bullets will hit some unknown distance below the bullseye at 200 yards at altitude of 3,000 feet. How many MOA do I need to turn...
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    PDA for long range

    Kestrel Ballistics Weather Meters A cousin attends a class on long range shooting. He tells me about "density-altitude" and that it affects long range shooting. Denaity-Altitude affects flight characteristics of aircraft. Then an ad on Page 51 of the June, 2013, issue of "Predator Xtreme"...