Awhile ago I bought a rws 34 22 caliber.  It came with a 4x scope.  I'm using this rifle as a garden pest control.  Looking for a 2-7 or maybe a 3-9 scope.  The scope on it holds zero but does not track to a farther distance then back to its 20yd zero.  I'm surprised at the accuracy of this airgun.  New to airguns and it amazed me.   Want a scope that will track distances and then re zero.  Or should I just get a mildot scope and learn the holds.

Most of the Hawke Airmax scopes have a reputation of good repeatability.  There are exceptions though.  However, I find that using mil-dots is generally easier and quicker as distances of my targets vary. (The half mil-dot reticle  in the Hawke Sidewinder Tactical scope is superb for hold-overs.  It is what I use on my Field Target Rifle.)

If you sight in around 30 yards, you will find that the trajectory is rather flat (enough to stay on a 1" target) somewhere between 15 and 38 yards or so.  Actual scope height and velocity will change these numbers somewhat.  To get a better idea of what your actual set-up does, I suggest downloading Chair Gun Pro from Hawke Optics.  This is free ballistics software specifically designed for airguns.

Consider that the higher the scope the worse your cheek weld will be, and too low you might still see your open sights, conundrum.

Ok thanks everyone.   I do a lot of shooting and have some high in scopes.  Nightforce, vortex razors etc but just didn't know what was the go to brand in airguns.  Looked at the 3-9 efr Nikon scope I can get It for like 140.  I'll look at the hawk scopes.   Ill try zeroing at 30.

I like finer reticles if possible.  Are the hawke mildot reticle thick or thinner nor usable

I have a cheaper Hawk Vantage 4-12 AO mil dot
I'd say the lines and dots are on the thinner side of the spectrum. The dots are almost hard to pick up depending on the background. It's a decent scope, but I too have NF and it's in another world of quality.

Ok.  Yes unrealized that these scopes are a whole different category and I'm not looking to spend a fortune by any means.  Thanks for the input

Get the Nikon scope

Which one are you suggesting?  Are they spring gun rated?

Yes air gun rated. I have 2 nikons on my RWS 34 .177 and RWS 48 .22.

https://www.airgunsofarizona.com/blog/2012/07/the-nikon-prostaff-3-9-x-40-scope-and-more-telling-on-myself.html

Get the rim fire version with adjustable objective for distance. Glass is very clear and bright. AO adjusts down to 10 feet if I recall correctly. I am out of state at the moment so can't look at the 2 scopes. One may be the 2-7 scope. But both are very nice. Normally I buy Leupold scopes for my rifle but I could not justify $300 for an air rifle scope.