[Scorch]

The profile of a barrel will have little effect on how accurately the rifle shoots. That has more to do with the consistency of the bore and groove diameter, the chamber being concentric to the bore, and the crown being perpendicular to the bore.

There are several aftermarket bull barrels available, and some are better than others. If you are determined to swap out the barrel, I would recommend buying a good quality bull barrel and stock kit. But before you do, test the accuracy of the factory barrel, you may be surprised. Since you have already upgraded the trigger, clean the barrel well, get a box of CCI Green Tag or Federal Gold Match and go to the range for a test. You will probably find your rifle shoots well as is, and that the ammo is at fault for inaccuracy in most cases.