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Leupold Boone & Crocket Reticle
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Leupold has a capable set-up with range estimation and wind compensation available on their VX-III scopes. Range estimation is accomplished by adjusting magnification until the animal’s chest fills the crosshairs up to the tip of the top thick post then reading the range in hundreds of yards on the other side of the power ring. Range estimation assumes an 18-inch chest depth. Wind compensation on their Boone & CrockettTM Reticle is for a 10 mph crosswind component. Depending on the performance of your rifle, zero ranges are designed to be 200 or 300 yards with some calibers requiring a lower power setting for accurate trajectory matching which is marked by a small triangle at 8x on their 3.5-10x and 11.2x on their 4.5-14x scopes. You can fine tune the BDC reticle to your rifles performance by adjusting the magnification to provide proportionally more or less bullet drop. In the case of my .308 and their 3.5-10x scope with a 200 yard zero, the BDC reticle would be tuned with the scope set on 8.8 magnification. Specific reticle details regarding calipers, bullet velocities, and MOA of reticle markings can be downloaded from the Leupold’s website, file name “Ballistics Reticle Supplement”. The Leupold VX-III scopes have less range of magnification than other manufactures, e.g., 3.5-10x vs 3-12x, 4.5-14x vs 4-16x. Leupold’s 4.5-14x is nice at the higher power settings but if you read the specification, their 4.5 is really a 5x magnification (4.9x).
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