If the rifle shoots straight without that particular scope, then you can be sure it's the scope.

What model RAR do you have that has iron sights? I wasn't aware that any of the American's in centerfire cartrdiges included iron sights.

So if it shoots well with a different scope, or if it shoots well with iron sights, then you can be sure you have a scope or mounting issue.

If you do, however, find out that you have a problem with the rifle, Ruger will make it right.

What's the scope? What ammo are you shooting? What rings and bases are you using? What rest are you shooting from to sight it in?

What size of groups is it producing, even though they are off the page?

If the mounts are indeed misaligned to the bore, then windage adjustable or compound adjustable rings might be your answer. Burris Zee rings would give you an opportunity to correct for a lot of misalignment.