Things I liked:The rifle has a nice look and feel. It is quiet, powerful and accurate. I got best accuracy with RWS Superpoint Extra pellets (8.2gr), with 1/2" penetration into 3/4" pine plywood at 23 yards. Love the nitro piston. Things I would have changed:The scope rings are a problem. The little "pawl" that holds the rings to the groove don't match, front and rear. That makes the front twist about 1/4" to the left of where the the rear lines up. I machined a front pawl to match the rear, and they lined up nicely. After that, the problem was parallax error with the scope itself. It is adjusted for parallax at 15 yards, and I'm shooting at 23 yards and 32 yards, so there was a lot of error. What others should know:I was able to get decent groups at lower magnifications by using the "ghost" of the front sight to get the same eye to scope alignment each shot, but I shouldn't have to do that. After two weeks of frustration, I replaced the scope with a Bushnell 4-12x40 scope, on clearance at Wally World for $28. It has an adjustable objective lens, to eliminate parallax error.