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Long Range Hunting & Shooting
Hunting drop charts?
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<blockquote data-quote="westcliffe01" data-source="post: 826781" data-attributes="member: 35183"><p>Colder air = denser air = more drag = less velocity out to 400 = longer time of flight and with gravity being constant that = more bullet drop.</p><p></p><p>I think however that your moisture assumptions are way off. Hot air can hold a lot more moisture than cold air. You might have had 60-80% humidity at 100F and that may drop to 10-30% at 35F. If you add 10mph of direct cross wind the bullet is also going to be displaced sideways from the intended point of impact and this also lengthens the path the bullet travels slightly.</p><p></p><p>If you want to learn about ballistics, try just changing 1 variable at a time instead of 3. Otherwise it can be very difficult to grasp what is going on. Try just changing the temperature through several steps. Then go back to the original condition and try changing just the elevation or barometric pressure. The try changing just the relative humidity.</p><p></p><p>Then look on some weather sites for realistic weather conditions in hunting season and compare to your summer shooting conditions. Any time one actually does ballistic verification, it is essential that the weather conditions are all recorded since this data can be used to correct the original ballistic calculation to get the proper drop.</p></blockquote><p></p>
[QUOTE="westcliffe01, post: 826781, member: 35183"] Colder air = denser air = more drag = less velocity out to 400 = longer time of flight and with gravity being constant that = more bullet drop. I think however that your moisture assumptions are way off. Hot air can hold a lot more moisture than cold air. You might have had 60-80% humidity at 100F and that may drop to 10-30% at 35F. If you add 10mph of direct cross wind the bullet is also going to be displaced sideways from the intended point of impact and this also lengthens the path the bullet travels slightly. If you want to learn about ballistics, try just changing 1 variable at a time instead of 3. Otherwise it can be very difficult to grasp what is going on. Try just changing the temperature through several steps. Then go back to the original condition and try changing just the elevation or barometric pressure. The try changing just the relative humidity. Then look on some weather sites for realistic weather conditions in hunting season and compare to your summer shooting conditions. Any time one actually does ballistic verification, it is essential that the weather conditions are all recorded since this data can be used to correct the original ballistic calculation to get the proper drop. [/QUOTE]
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