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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistic Table Is Not Matching Scope Clicks
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<blockquote data-quote="7magcreedmoor" data-source="post: 975903" data-attributes="member: 48559"><p>One more thing to remember: trajectory validation process. No matter how good (read: expensive) the equipment you use, you must perform trajectory validation to shoot long(er) range well. If using a chronograph to measure muzzle velocity, you must accept that there will be some error. After gathering your initial data and printing out your drop chart, you must go back to the range and test again, shooting at multiple ranges, for example: a 100 or 200 yard zero, then an intermediate distance, say 500 or 600 yards, then the longest distance you would like to hunt at, say 1000 yards. Record the turret settings, and the actual point of impact deviation (there will almost inevitably be some), then go back to your ballistic program and use the validation feature if it has one (like the one on this site) or adjust the MV until you get output that matches your observed data (assuming the BC you have from the manufacturer is reliable- read Bryan Litz for an excellent treatise on this). The final muzzle velocity you get from this process is the truth. Then you can print drops that will work in the field, so long as your environmental variables are accurate. I say this taking on faith you have already tested and quantified the true adjustment interval of your scope as mentioned in a previous reply to your post. That is something you must do before any of what I have said can work. Have fun, it will be great.</p></blockquote><p></p>
[QUOTE="7magcreedmoor, post: 975903, member: 48559"] One more thing to remember: trajectory validation process. No matter how good (read: expensive) the equipment you use, you must perform trajectory validation to shoot long(er) range well. If using a chronograph to measure muzzle velocity, you must accept that there will be some error. After gathering your initial data and printing out your drop chart, you must go back to the range and test again, shooting at multiple ranges, for example: a 100 or 200 yard zero, then an intermediate distance, say 500 or 600 yards, then the longest distance you would like to hunt at, say 1000 yards. Record the turret settings, and the actual point of impact deviation (there will almost inevitably be some), then go back to your ballistic program and use the validation feature if it has one (like the one on this site) or adjust the MV until you get output that matches your observed data (assuming the BC you have from the manufacturer is reliable- read Bryan Litz for an excellent treatise on this). The final muzzle velocity you get from this process is the truth. Then you can print drops that will work in the field, so long as your environmental variables are accurate. I say this taking on faith you have already tested and quantified the true adjustment interval of your scope as mentioned in a previous reply to your post. That is something you must do before any of what I have said can work. Have fun, it will be great. [/QUOTE]
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Ballistic Table Is Not Matching Scope Clicks
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