Nikon 8405 User Guide - Page 14

If your particular firearm setup does not match the drop chart above, have not fear, the BDC reticle can and will still work perfectly for you. By using a 2" circle (subtension at 100 yards) instead of a dot or hash mark, you have multiple aiming points (top, middle and bottom of the circle) to customize the reticle to you specific firearm. The circle allows you to see the target with obstructing it and still fits well within the body of big game animals out to 600 yards. Should your firearm perform in a manner that is not consistent with the image above, use the technique mentioned later to maximize your firearms performance and customize the reticle to your particular setup. The Nikon BDC can be fine-tuned to your requirements by a simple field shooting procedure as follows: • Zero the scope at one hundred yards so that your point of impact is identical to the point of aim. If you are interested in shooting