The more rigid and stable the design of the rifle the more accurate it should be - except when it isn't. Never say never when it comes to firearms. I've seen some absolute junk guns shoot as accurate as the best guns. That doesn't mean it will always happen that way.
Generally speaking a solid receiver (no cutouts in the receiver to allow bullets to feed except the one where the bullets go in and the cases come out), bolt action rifle is going to be more accurate given everything else being equal. But firearms are funny things. You could end up with a BR quality rifle that's a break down. But I wouldn't bet on it.
Heck I have a Raven P-25 pistol (Saturday Night Bargain Basement Special) that was as accurate as some of my pistols that cost 15 times as much. No joke. I've sank leaves in a pond from 65 yards away with that pistol. That's just weird I know. I couldn't believe it either until I saw it.
Every other example of those pistols I've seen were total junk that wouldn't hit the side of a barn from inside the barn. I finally figured out how to take it apart (it wasn't easy at all) and clean it and now it shoots like every other Raven - badly. But for years it was milk jug accurate at 50 yards on average.
No way a pistol like that should be that accurate but it was. I wish I had never cleaned it now but it was barely working because of never being cleaned. It was a junk pistol I paid $50 brand new and I just got lucky as heck. I could have probably bought 1000 more and never got one to shoot like that one did.
