The scope is a Leapers 3-9x50 with parallax adjustment which retails somewhere in the vicinity of $70US and the mount is actually an airgun mount which uses the 597's dovetails but also has an integral stop pin which drops down through the mount and through one of the weaver base screw holes in the receiver. The mount is also leapers - Leapers Full Length Integral High Mount: RGPM2PA-25H4
works nicely. 4 days ago I was zeroing my rifle for some new ammo I'd bought, cci standard velocity, and the best 5 shot group I shot at 50 meters (slightly further than 50 yards) was pretty much half an inch center to center. I'm pleased with how it shoots.
*edit: I was matching the subsonics you see in the top photo to the standard velocity and the subs do tend to be a little more consistent but will have to shoot a bit more standard velocity to see how things pan out.