Thread: is a 3-9x40 scope an overkill for a .22?

Originally Posted by Old_School

Hey something ive noticed with this scope is it has another dial marked - to + right on the eyepiece itself.
I thought it was for focus, but it appears to be an extra level of zoom, it magnifys the image substantially more than if i just dial the main focus to 9x for example.
Is this common? The eyepiece will extend out about another 10mm if i screw it out all the way.

That is to dial it in to your preferred/needed level of "blindness"
(There is probably a more optometrically correct term for this)

Pointing at the sky or some far-off uniform colour thing, adjust it until the crosshairs are sharp for you. There should be a lock-ring inbehind the bell to lock in your setting.