Fwb 65
Yes, the FWB-65 is expensive. I know because I have one. However ...
They are designed to last a lifetime of heavy use.
At 10 meters (33 feet) they will group at or inside 1/4 inch
The triggers are designed to they can be set for match shooting, or as a firearms trainer.
They have an anti-recoil system that compensates for the usual spring & piston gun recoil, and it can be locked if you want to (somewhat) simulate small bore recoil.
You can practice anywhere, including a motel room on the way to a tournament, and/or in good weather or bad, within your own house and not have to go to a range.
Air is free and quality pellets are still inexpensive when compared to regular ammunition.
The sights are adjustable, and about as precise as you can get.
So years ago I considered all of the above and bit the bullet, and bought one.
And I have no regrets ...
Edited to add: Check Beemans. They sometimes have used guns for attractive prices.