Shooting bullets and adjusting their impact to check a scope's adjustments allows errors equal to the accuracy of the rifle and ammo plus the non repeatability of the shooter. A 1 MOA or more error's normal.
If you scope's got 1/4 MOA/inch clicks, you and your stuff has to shoot no worse than 1/10th MOA using the "boxing" method to see if they really are that accurate. You don't measure how thick a human hair is with a yardstick, do you?
Do as Big Al suggests. That's gonna get much more accurate results.
US Navy Distinguished Marksman Badge 153
Former USA Palma Team Member
NRA High Power Long Range High Master
NRA Smallbore Prone Master
Last edited by Bart B.; April 29, 2013 at 09:54 AM.