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Hunting
Long Range Hunting & Shooting
Temperature effecting bullet drop
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<blockquote data-quote="JeffVN" data-source="post: 237035" data-attributes="member: 2261"><p>Yep the temperature difference translates into a lower velocity muzzle and then more drop at any given distance. </p><p></p><p>The good news is you figured it out before you hit the hills on your hunt. You should be able to develop a decent per temperature degree drop in velocity based on some of your current data, such that you can predict the drop if its -20C on your hunt.</p><p></p><p>My brother has aper degree velotiy drop formula for RL-15 that he uses for his .308. I use an Exbal program that lets me input the temp and other weather conditions - so it does the math for me. Having aback up sheet that predicts behavior gives you the ability to verify the sugggested numbers from a PDA without having to rely entirely on the gizmo to be correct.</p><p> </p><p>JeffVN</p></blockquote><p></p>
[QUOTE="JeffVN, post: 237035, member: 2261"] Yep the temperature difference translates into a lower velocity muzzle and then more drop at any given distance. The good news is you figured it out before you hit the hills on your hunt. You should be able to develop a decent per temperature degree drop in velocity based on some of your current data, such that you can predict the drop if its -20C on your hunt. My brother has aper degree velotiy drop formula for RL-15 that he uses for his .308. I use an Exbal program that lets me input the temp and other weather conditions - so it does the math for me. Having aback up sheet that predicts behavior gives you the ability to verify the sugggested numbers from a PDA without having to rely entirely on the gizmo to be correct. JeffVN [/QUOTE]
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