I have a model 12BVSS 223 rem that shoots 52,69,70gr bullets well. have had some very small groups--< .5" at 100yds
I also have a Stevens action build with a Shilen 223rem 8 twist that is also a great shooter
I have got it shooting 52gr matchkings .3 to .5" consistently
Have not had much time to shoot 69 and 80 grain, still working on the loads but they look promising as well
I do think that the Stevens/Shilen rifle is more accurate than the BVSS but either one will easily be sub moa
Jack