Need advice on rifle scope

[Tri-Cities Bob]

I recently purchased a rifle and scope on GunBroker.com. They both appear in excellent condition. The rifle is a Ruger 10/22 Target and has shot sub-MOA groups at 100 yards. The problem is with the scope. It's a Bushnell 4-12x 50mm SportView. When I change the focal length, either from 4x to 12 or from 12x to 4x, the crosshairs shift either clockwise or counterclockwise (whichever way the focal length adjustment ring has been turned). They were originally perfectly level with the rifle but now are sometimes up to 45 degrees off level. They seem to move somewhat every time I change the scope's focal length.

Is there a simple adjustment somewhere to lock the crosshairs in one position or do I need a new scope? Although I've been shooting for about 40 years, it has always been with iron sights so this is new to me. Thanks for any advice you can give.

[seez52]

I think your scope needs a trip back to it's birthplace. The hairs shouldn't move.

[Tri-Cities Bob]

Thanks. I figured that was the case but since I'm not the original owner the "lifetime warantee" doesn't apply. It's not a top shelf scope, so I'm probably better off just getting a new one. I was hoping there was an easy fix I wasn't aware of.

[seez52]

you sure on the warranty? sometimes second hand is ok, especially if it says lifetime.

[Tri-Cities Bob]

I checked the Bushnell web site and their warranty is for the lifetime of the original owner. I know some scope manufactures cover subsequent owners too, but not Bushnell. Thanks for the thought.