I've looked it over pretty well. I tried the paper test - sliding a piece of paper between the barrel and stock for unwanted points of contact (no problems). I've gone over it and tightened screws and bolts (there aren't many in an RAR). I switched out the scope last night and that will be my next test. I doubt its the optics, though, because even though my groups are awful, you can see that the patterns of the different ammo I shot are consistent. I'm leaning toward something just being wrong with the barrel, which would likely be nothing I could fix w/o sending it back or having a gunsmith work on it.
Unfortunately, I'm not going to make it to the range again anytime real soon. I'm having Carpel Tunnel surgery on both hands on Wednesday and will need to recover before I do anymore shooting. Thanks for the ideas and keep them coming if you have anything else.