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Thank you for choosing the Nikon BDC reticle riflescope / crossbow scope. The BDC reticle is designed to compensate for the trajectory of your firearm or crossbow. Regardless of the particular style
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of BDC reticle you have, the position of the circles are based upon an average trajectory for some of the more popular projectiles and cartridges on the market based upon the intended use of the scope
itself.
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Please note that the reticle is based upon ballistic information and may or may not meet the same results for you as there are many variables that come into play such as:
• Actual Velocity (Ammunition manufactures' information in regards to muzzle velocity may or may not match the velocity your firearm or crossbow produces. The best way to determine the actual
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muzzle velocity for your firearm or crossbow is to use a chronograph).
• Temperature
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• Humidity
• Altitude
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• Barometric Pressure
• Condition and inherent accuracy of the firearm
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• The mounting system and how true it positions the scope to the centerline of the bore
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Note: This manual is not applicable to some reticles that are available in your region.
As you read further into this manual, you will see the suggested parameters in which the reticle was based. These parameters will help you get started in optimizing your setup. While these parameters
are a great guideline, we highly recommend you visit the following website to truly ballistically match your scope to the cartridge or crossbow bolt you are shooting.
www.nikonhunting.com/SpotOn
The Spot On website* has been designed to provide accurate information that matches the ballistics of whatever projectile you are shooting directly to the reticle.
* The Spot On service is available only in the United States and Canada.
Please note that you should verify that your set up matches the information provided in this manual or the Spot On program before venturing into the field. The only way to truly verify the information
is by actual shooting. Again, the variables listed above may or may not affect the results.
Note: It is imperative that the reticle be level in relation to the firearm. If the reticle is canted, even just a few degrees, it can cause the shot to drift off the centerline of the point of aim. There are many
commercial leveling devices on the market, but the one that we find to be the most accurate in leveling the reticle is a plum bob. Use a bubble level to make sure the firearm or crossbow is level, then
look through the scope at an appropriately placed plumb bob and align the reticle accordingly.
Please also note that all Nikon BDC reticles were originally designed to be used on the highest magnification. Since changing the magnification changes the position of the circles in relation to
the target, the distances listed along with each of the illustrations are at the highest magnification. The center crosshair does not change with magnification as it is placed in the optical center of the
scope. The benefit of the Spot On program is that it calculates the distance that each circle represents at every magnification. You can even print a chart that shows the distance for each circle at each
magnification that is present on the scopes magnification ring.
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