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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Leupold VX5 HD 3-15x44 Tracking Test
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<blockquote data-quote="LeddSlinger" data-source="post: 1631513" data-attributes="member: 65338"><p>The correct amount of tracking error is hard to calculate accurately by firing rounds down range. The only way to determine the true tracking ability of a scope does not need any rounds fired at all. But it does take two scopes to achieve it and laser rangefinders cannot be fully trusted.</p><p></p><p>I hang a 'double yard stick' (72") in a tree and measure the distance with a 300 ft logger's tape measure. Place the scope to be tested along with a reference scope into my 'scope checker'</p><p></p><p>The reference optic never gets adjusted after setting the reticle on a good reference mark. Then I can adjust the elevation on the scope being tested. If things get moved, and they will, it doesnt matter because I just adjust my tripod head so that th reference scipe is back on its mark then look in the tested scope to see exactly how far it has traveled up the yard stick with the adjustment given. The method is completely fool proof and does not rely on the accuracy of a rifle or laser range finder. It will no doubt give you an extremely accurate correction factor calculation down to one-tenth of 1 percent (0.1%).</p><p></p><p>No need to pack up and move to a shooting range, you can do it right in your back yard. Any scope will work as a reference optic. I usually test tracking error at 25 yards because it's easier judge movent accurately and any distance can be plugged into the calculation and it will come out with the correct solution.</p><p>Pictures and error correction factor calculation listed below.</p><p><strong><u></u></strong></p><p><strong><u>Adjustment Error Correction Factor for MOA</u></strong></p><p>(Actual distance to target in yards) x (Amount of MOA dialed) x 0.01047 = Expected turret travel in inches</p><p></p><p>(Expected turret travel) ÷ (Actual turret travel) = Adjustment Error Correction Factor (%)</p><p></p><p></p><p>Double yard stick</p><p>[ATTACH=full]133360[/ATTACH]</p><p></p><p>Two scopes on my scope checker and tripod.</p><p>[ATTACH=full]133361[/ATTACH]</p></blockquote><p></p>
[QUOTE="LeddSlinger, post: 1631513, member: 65338"] The correct amount of tracking error is hard to calculate accurately by firing rounds down range. The only way to determine the true tracking ability of a scope does not need any rounds fired at all. But it does take two scopes to achieve it and laser rangefinders cannot be fully trusted. I hang a 'double yard stick' (72") in a tree and measure the distance with a 300 ft logger's tape measure. Place the scope to be tested along with a reference scope into my 'scope checker' The reference optic never gets adjusted after setting the reticle on a good reference mark. Then I can adjust the elevation on the scope being tested. If things get moved, and they will, it doesnt matter because I just adjust my tripod head so that th reference scipe is back on its mark then look in the tested scope to see exactly how far it has traveled up the yard stick with the adjustment given. The method is completely fool proof and does not rely on the accuracy of a rifle or laser range finder. It will no doubt give you an extremely accurate correction factor calculation down to one-tenth of 1 percent (0.1%). No need to pack up and move to a shooting range, you can do it right in your back yard. Any scope will work as a reference optic. I usually test tracking error at 25 yards because it's easier judge movent accurately and any distance can be plugged into the calculation and it will come out with the correct solution. Pictures and error correction factor calculation listed below. [B][U] Adjustment Error Correction Factor for MOA[/U][/B] (Actual distance to target in yards) x (Amount of MOA dialed) x 0.01047 = Expected turret travel in inches (Expected turret travel) ÷ (Actual turret travel) = Adjustment Error Correction Factor (%) Double yard stick [ATTACH=full]133360[/ATTACH] Two scopes on my scope checker and tripod. [ATTACH=full]133361[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Leupold VX5 HD 3-15x44 Tracking Test
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