To clarify I was referring to "boresighting" a long range scope to a rifle. This ensures your hitting what your crosshairs are aiming at. This can be done at any close distance once you initially attach the scope. I think some are confusing that with the incremental range settings or range "zeroing". Zeroing the scope up and down using page up/down works fine and shouldn't need any additional tools since the scope has already been boresighted. I just think that if you want to be effective at long range than simply attaching any long range scope to a rifle should require this extra step. My opinion of course. Some if not most wont agree, thats fine by me. Perhaps it does skirt that fun to realism line a bit. Someone mentioned the scopes condition as a modifier. Yeah that's actually a good idea. Found a worn out scope? Gonna have to sight it in to make it work.