How to use a reticle bore sighter

Buy the Bushnell Boresighter here.

Use the Bushnell bore sighter to get your Rifle Scope on paper without wasting ammunition. The Bushnell glass reticle shot saver mounts on a bore stud that is inserted into the end of your rifle barrel. Be sure to unload your rifle and, preferably, remove the bolt before inserting anything into the barrel. Also, be sure to follow all of the manufacturers safety precautions.

After the bore sighter is inserted into the barrel, look through the rifle scope and use your windage and elevation adjustments to zero the scope.

It's that simple. You should now be on paper at 50 yards. Remove the Bushnell Boresighter and take your rifle to the range and complete your final adjustments with live rounds.

Bore Sighter Wiki.