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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
BALLISTIC COEFFICIENTS/Twist Rates
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<blockquote data-quote="groper" data-source="post: 419685" data-attributes="member: 12550"><p>Well luckily my ballistic calculation software allows me to input a "custom click value" so i simply get it to output the elevation in "0.105 milrad clicks" instead of "0.1 milrad clicks" like its supposed to be.</p><p></p><p>Failing that capability, i would simply adjust the total elevation required by 5% and round that number to the nearest click. In your case 7% adjustment.</p><p></p><p>So if your calc is telling you you need 35MOA for the shot and your scope is out 7% over for instance;</p><p></p><p>multiply 35MOAx1.07= 37.45MOA = rounded dial ON THE SCOPE 37.5MOA.</p><p></p><p>If its out by 7% under;</p><p>divide 35MOA/1.07 = 32.71MOA = rounded dial ON THE SCOPE 32.75MOA.</p><p></p><p></p><p>DO NOT tweak the G7 BCs that bryan has published, they are closer than 1% accurate, they do not need tweaking. Its the velocity and scope where the problems lie.</p><p>Reverse calculate the ACTUAL drops from the elevation you dialed on your scope taking into account 7% error.</p><p>TWEAK YOUR VELOCITY, to match the ACTUAL drops at as much distance as you can, No less than 800yds preferably but the more the better, 1000yds is ok.</p><p></p><p>IF you dont have a tested verified G7 BC from bryan, then things get a whole lot more difficult and the best way forward would be calculate your own BC from shooting thru 2 chronies as far apart as possible, 1 at the muzzle and 1 at 500yds would be ok.</p></blockquote><p></p>
[QUOTE="groper, post: 419685, member: 12550"] Well luckily my ballistic calculation software allows me to input a "custom click value" so i simply get it to output the elevation in "0.105 milrad clicks" instead of "0.1 milrad clicks" like its supposed to be. Failing that capability, i would simply adjust the total elevation required by 5% and round that number to the nearest click. In your case 7% adjustment. So if your calc is telling you you need 35MOA for the shot and your scope is out 7% over for instance; multiply 35MOAx1.07= 37.45MOA = rounded dial ON THE SCOPE 37.5MOA. If its out by 7% under; divide 35MOA/1.07 = 32.71MOA = rounded dial ON THE SCOPE 32.75MOA. DO NOT tweak the G7 BCs that bryan has published, they are closer than 1% accurate, they do not need tweaking. Its the velocity and scope where the problems lie. Reverse calculate the ACTUAL drops from the elevation you dialed on your scope taking into account 7% error. TWEAK YOUR VELOCITY, to match the ACTUAL drops at as much distance as you can, No less than 800yds preferably but the more the better, 1000yds is ok. IF you dont have a tested verified G7 BC from bryan, then things get a whole lot more difficult and the best way forward would be calculate your own BC from shooting thru 2 chronies as far apart as possible, 1 at the muzzle and 1 at 500yds would be ok. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
BALLISTIC COEFFICIENTS/Twist Rates
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