Guys, I've been away from shooting since the '80s with my Dad. Now my 14 year old is going in with both feet. We have his 700 Varmit in 308, my 40x in 22-250 and my dad's old 77 in 220 swift that needs a new barrel. My son wants to shoot F-class at the local range. I think I want to make the 77 into an open gun in 284 win. I work as a engineering group manager and have access to a full machine shop, but think I'll leave most of this to a pro. I know the reloading base is slightly different on the 220 swift, but can I just have the barrel changed to 284 win? Any recommendations on where to send the 77 to have the barrel swapped and properly chambered? We live just outside Memphis TN, so let me know if there are local options.