Originally Posted by RobF
Unfortunately the eye is easily fooled. I used to think mine wasn't but found out to my cost it's easily tricked. If you ask the top 20 ft shots if they think a spirit level is important, I reckon you'd get 19 saying yes, and that the 20th needs one
Fair enough a level is handy to stop rifle cant.
Though i would never set a scope up using a level on it, what your eye sees down the scope is important not the pyshical body of the scope.