I bought mine used, 3rd owner, with all the paperwork.
Other than taking it apart and inspecting it, then torquing it in place I have done nothing to the action or stock. I did have the trigger tuned by a noted gunsmith and that was the best thing I could have done.
Having said that, I get groups just over 1 inch with Winchester Supreme 140 gr Ballistic Silvertip ammo - at 200
yards. I'm sure the rifle is capable of better.
I have not bedded it yet because there hasn't been a need given its accuracy, and will start handloading for it once my Christmas presents arrive.
I've also tried Hornady Superformance ammo in it and done almost as well.