If you are okay with Iron sights a semi would be a good way to go to get you shooting or a cheap 22LR with a mid level vortex would also work well. Your scope will probably be the most expensive part of the gun excluding ammo but I've shot my 22LR out to 300 yards accurately. Shotguns are just insanely fun especially blasting clay targets. A good NR semi you will definitely be in the $2k range unless you want just a range toy which you could get a NEA AR for like $500 or so.