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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
BALLISTIC COEFFICIENTS/Twist Rates
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<blockquote data-quote="Topshot" data-source="post: 419671" data-attributes="member: 13285"><p>Good point Groper,</p><p>Lets talk "Tweaking"............</p><p>Say you have a scope that is out 5%. What's the best way to compensate for this error given that shooting under a hunting situation, the distance, pressure, temperature etc will always be different?</p><p> </p><p>I have two scopes that have about 7% error in the elevation adjustment. What I do is measure the velocity, then calculate the real drop required at about the maximum range that I intend to hunt using the best available B.C. numbers that I can find including Bryan's G7.</p><p> </p><p>I then shoot at that distance and measure the error on the target. I then adjust the dial cap to read the calculated dial up and then shoots at closer ranges. The closer you are to the target the less the error matters.</p><p> </p><p>ie, Say I am out by 2 MOA at 800 yards. I move the turret 2 MOA and lock it in position.</p><p> </p><p>I may then be 1 MOA out at 400 yards and 2 MOA out at 100 yards but that is better than being 2 MOA out at 800 yards. If you follow my drift.</p></blockquote><p></p>
[QUOTE="Topshot, post: 419671, member: 13285"] Good point Groper, Lets talk "Tweaking"............ Say you have a scope that is out 5%. What's the best way to compensate for this error given that shooting under a hunting situation, the distance, pressure, temperature etc will always be different? I have two scopes that have about 7% error in the elevation adjustment. What I do is measure the velocity, then calculate the real drop required at about the maximum range that I intend to hunt using the best available B.C. numbers that I can find including Bryan's G7. I then shoot at that distance and measure the error on the target. I then adjust the dial cap to read the calculated dial up and then shoots at closer ranges. The closer you are to the target the less the error matters. ie, Say I am out by 2 MOA at 800 yards. I move the turret 2 MOA and lock it in position. I may then be 1 MOA out at 400 yards and 2 MOA out at 100 yards but that is better than being 2 MOA out at 800 yards. If you follow my drift. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
BALLISTIC COEFFICIENTS/Twist Rates
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