and a high bc pellet that your gun likes is always a good thing! if you can get lucky and your gun likes those that's half the battle and then to get a lot# that your gun loves. that is the winning combo that will get you trophy results
You all might find a read on the British BBS forum of interest. Search for posts involving a member called BigAl. He worked for Ripley for years and is a sort of barrel guru. He turns a lot of folks bad barrels into good ones with just some hand honing work.