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Hunting
Long Range Hunting & Shooting
MOA and Temperature
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<blockquote data-quote="Michael Eichele" data-source="post: 609624" data-attributes="member: 1007"><p>Yes temps have a HUGE impact on trajectory like pressure does. Humidity has the least effect in regards to enviormental influences. Temp and pressure make up the majority of air density. Altitude only effects pressure. In the end, it is the raw pressure that determines bullet flight and not altitude in and of itself.</p><p></p><p>Play with a ballistic calculator a bit and you will see that air density has a HUGE factor on bullet trajectory.</p><p></p><p>My 308 has a difference of over 10MOA (over 100") of drop at 1000 yards between the -10 degrees/sea level that I practice in versus the 60 degree/5000' above sea level that I hunt dall sheep in.</p><p></p><p>Just changing from -10 to 60 degrees (staying at sea level) changes the drop at 1K by nearly 60". Thats just the difference in 70 degrees of temp spread.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 609624, member: 1007"] Yes temps have a HUGE impact on trajectory like pressure does. Humidity has the least effect in regards to enviormental influences. Temp and pressure make up the majority of air density. Altitude only effects pressure. In the end, it is the raw pressure that determines bullet flight and not altitude in and of itself. Play with a ballistic calculator a bit and you will see that air density has a HUGE factor on bullet trajectory. My 308 has a difference of over 10MOA (over 100") of drop at 1000 yards between the -10 degrees/sea level that I practice in versus the 60 degree/5000' above sea level that I hunt dall sheep in. Just changing from -10 to 60 degrees (staying at sea level) changes the drop at 1K by nearly 60". Thats just the difference in 70 degrees of temp spread. [/QUOTE]
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