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Long Range Hunting & Shooting
Calculating range adjustment for ranges you have not shot?
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<blockquote data-quote="Capt RB" data-source="post: 1922698" data-attributes="member: 85987"><p>First, do a tall target test with your rifle scope load combination. This will show you what exactly your turret is correcting to. Here are calibrated targets there are others but these work well.</p><p>[URL unfurl="true"]https://www.boxtobenchprecision.com/target-instructions-2[/URL]</p><p> You have velocity and you have a stated BC. What you don't have is tested form factor. Twist rate the way the lead is cut etc can effect the form factor by excessive coning angle causing a different bc due to more or less drag. If you use a Hornady bullet I'd highly suggest the hornady ballistics solver they have the bullet in their library along with many other brands. It allows you to tweak the form factor that trues up your solution faster. </p><p>It is when you have to start changing the bc due to velocity loss at great distance that you will have the major issues. There are not many bullets being used that you cannot find the real bc for today. Many have shot what you plan to shoot if there were real issues you would be able to easily find the necessary information to correct those discrepancies</p></blockquote><p></p>
[QUOTE="Capt RB, post: 1922698, member: 85987"] First, do a tall target test with your rifle scope load combination. This will show you what exactly your turret is correcting to. Here are calibrated targets there are others but these work well. [URL unfurl="true"]https://www.boxtobenchprecision.com/target-instructions-2[/URL] You have velocity and you have a stated BC. What you don't have is tested form factor. Twist rate the way the lead is cut etc can effect the form factor by excessive coning angle causing a different bc due to more or less drag. If you use a Hornady bullet I'd highly suggest the hornady ballistics solver they have the bullet in their library along with many other brands. It allows you to tweak the form factor that trues up your solution faster. It is when you have to start changing the bc due to velocity loss at great distance that you will have the major issues. There are not many bullets being used that you cannot find the real bc for today. Many have shot what you plan to shoot if there were real issues you would be able to easily find the necessary information to correct those discrepancies [/QUOTE]
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Calculating range adjustment for ranges you have not shot?
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