If it's for hunting and <300m target shooting, most cheap scopes would work. I brought a $150 bushnell for a caribou gun that worked well, 5 caribou down over several years. Shooting quickly it would group 3" or so at 100m, but that's totally fine for the hunting I did. I've never shot anything >200m anyway.
Believe it or not, I have a friend who put a $20 AIRSOFT scope on his HKSL8 (he's going to put a Leupold MK 4 on it, but got the gun first and HAD to try it, you know how it is) and we hit a 3" gong at 300m 3-4 out of 5 times consistently.
You can always upgrade later. Keep an eye on deals, get to know older guys at the gun club, you never know when someone will do you a favor and give you something that's sat in the closet for a few years for a good deal to help out a new shooter.