I suggest getting out of the $50. Chinese scope and buy at least a medium grade scope. Weaver RF scopes, VR-7 or VR-9 have good reputations and about as inexpensive as I'd go. I have a VR-7 on my 22H. I believe the Leupold 3x9 RF scope has an adjustable objective for close in parallax adjustments. Most highpower scopes under 12x have their parallax adjusted to 100-125 yards, rimfires 50-75 yards.
I'm 70 and have had double cataract surgery, in fact I can no longer use open sights because I can't focus close enough to even distinguish the notch in the sight and unless a peep sight has a small aperture and a very large disk they are useless also. Scopes work just fine for me.
