That bore looks weird (in a bad way) I guess see how it shoots but a new barrel or having the existing barrel relined is a option. As far as function 41's seem to come in two flavors, finicky and no problem. I think the extractor is the most common reason for jams on these pistols not the barrels. I have a late 70's version that came with a 7.375 inch barrel and it is extremely reliable with any ammunition that I have tried in it. On a lark I bought a new 5.5 inch barrel and a used 5 inch field barrel and they all function fine even though they are all different ages. The other item that can cause problems is a bad recoil spring. Anyway there is a lot of info out there regarding making the 41's run well so good luck..