First things first, please make an intro post. Secondly, using .25 bbs is most likely the problem. It is not the scope, its the rifle. The light bbs cause inconsistency as they curve all over the place. If your shots are not consistent than how in the world are you expecting to zero the rifle in?? ???
Change to some heavier weight bbs, adjust the hop up, and you will see much better results. Then go ahead and zero in your rifle.
Change to some heavier weight bbs, adjust the hop up, and you will see much better results. Then go ahead and zero in your rifle.