I recently bought a Crosman Marauder PCP (pre-charged pneumatic) in .22 caliber. I got it as an alternate to shooting .22LR, which I have not found any at reasonable prices since the ammo shortages started late last year. It is really accurate, and has an average velocity of around 900 fps with 14 grain pellets. I bought the special Hill Pump from Pyramid, and get about 50 shots for 100 pumps which makes for a decent shooting session.
This sort of setup is not cheap though, for an entry-level PCP such as I got you're looking at spending $700-900 for the gun, special pump (or SCBA tank), and scope.