Dave,
Those Handy Rifles do pretty good for the price. When you say yours changes point of impact I wander if it`s not the scope. I bought one a couple years ago in .223 just because it was to cheap. I got a bunch of ammo with it that was just blasting ammo. SD on the stuff was real bad, but the gun did better than I would have expected with it. I never did work with it to see how it really would shoot, but the point of impact never change. The guy I sold the gun to really likes it, and it the only varmint rifle he owns.