There are way too many factors to say that one action is better than the other, or more accurate. IT is obvious that a bolt action will be the most accurate, but so much more work can be done to a bolt-that you basically can not do to a break action.

The barrel is the weak point in the accuracy of a rifle. You must have a good barrel. But then you must remember the accuracy that semi-auto's are now enjoying.

For the money the single shot is (IMO) as accurate as any. The problem is you can put a lot of custom gunsmithing into the other actions, that you really can not do to the break open. Tom.