The question asked is what can this rifle do. Not is it good enough for your use. Using ammo suited to the gun , what will it do day to day? How does it compare to the other two?
It's not clear whose use you are referring to. If it's for the general reader of this thread, it makes little sense. If it's in reference to me, it makes even less sense. I haven't commented on how the RimX shoots, except to say that with a custom barrel there's every reason to believe it ought to be capable of better accuracy than a Bergara with a factory barrel. If it's in reference to something else entirely then I apologize in advance for misunderstanding.
In response to an earlier question about accuracy reports, I posted a link from which some examples were posted. I suggested that the results were probably obtained with random lots. I don't know how the results were produced or whether they are atypical of RimX targets. I would expect that better lots of ammo will produce much better results, as they should for any good rifle. Random lots are literally hit and miss in their performance.