There was no optimism that I'm aware of - not from Ruger anyway. There have been several independent reviews in which they got around 1 MOA. I would assume the rifles were benched, but I don't know offhand. I may be able to look some up a bit later.Looking at the design it makes sense to me that there could be significant camming force with the adjustable nut so that the barrel would be very rigid with the action. Still 1 moa from a 9mm seams pretty darn optimistic given the bullets available and the fact that the forend is hanging off the barrel. If it could deliver even 3 moa I would consider that pretty amazing. I have a 300 blackout AR I built in anticipation of getting a suppressor but if this ruger can truely deliver that kind of accuracy I think I will rethink that as 147gr 9mm would be a fraction of the cost to load.