Nikon 8405 User Guide - Page 3

Your new scope must be properly mounted to ensure accurate and reliable use in the field. Here are some of the basics: • All base and ring screws should be properly tightened. LocTite should be applied if suggested by the manufacturer of the scope mounts. • The scope must be positioned in the rings to ensure correct eye-relief. You should see a complete field of view upon bringing the rifle to firing position. A good check for eye-relief is to close both eyes, shoulder the rifle, then open your shooting eye and examine the field of view. You should have a complete circular field of view every time. • The reticle should be vertical. This can be assured by locking the rifle in a vise or suitable holder using a bubble level to ensure it is sitting square. Look through the scope at an appropriately placed plumb-bob and align the vertical reticle. The plumbbob can be a length of string with a small weight on one end.