Hi,
I had an R1 synthetic in 30-06 for a yearish. It was a beautiful rifle, built like a tank but light and nice carrying. It wasn't a great shooter, best I could get consistently was 1.5-2" with good reloads, I did get some MOA groups but it was an unusual day to see that. The trigger was about 7lbs.
The other thing I didn't care for was exactly what you mentioned, the POI shifted almost everytime I pulled the forend off to clean it (and you should do it everytime it gets wet). Not a big change, 1/2 to an inch, but enought to drive me nutty. It's gone now, I got a custom 7600 in .270 which is on it's way out as well because it just won't do what i want. Gotta say that it's hard to find an accurate enough pump or semi when you have Tikka's, Savage's and Encore's that shoot 1/2 MOA with good quality reloads as your benchmark. I guess it all depends on what you expect and want out of a rifle...