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Rifles, Reloading, Optics, Equipment
Rimfire and Airguns
Effect of Weather Conditions and Elevation on .22LR?
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<blockquote data-quote="FAL Shot" data-source="post: 576512" data-attributes="member: 27328"><p>Was there heat mirage visible in your scope? If you sight in a rifle early in the morning around here, when you see boiling heat mirage through your scope later in the day, you will be hitting high. It can be a lot more rise than 1/2" rise at 50 yards. It's the heat near the ground, not higher up at standing head level I'm talking about. You can have considerable heat mirage near the ground even on a windy day when you aren't bothered with it as much standing up. It's the visual image floating above actual location caused by refraction of light rather than altitude density change caused by higher temp that makes the biggest difference.</p></blockquote><p></p>
[QUOTE="FAL Shot, post: 576512, member: 27328"] Was there heat mirage visible in your scope? If you sight in a rifle early in the morning around here, when you see boiling heat mirage through your scope later in the day, you will be hitting high. It can be a lot more rise than 1/2" rise at 50 yards. It's the heat near the ground, not higher up at standing head level I'm talking about. You can have considerable heat mirage near the ground even on a windy day when you aren't bothered with it as much standing up. It's the visual image floating above actual location caused by refraction of light rather than altitude density change caused by higher temp that makes the biggest difference. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rimfire and Airguns
Effect of Weather Conditions and Elevation on .22LR?
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