Charles, let me know how things work out for you. I am very curious. I'm putting together a .375 2.5" also. Right now things seem to be getting out of hand, as I arrange for a custom stock, a custom barrel and all sorts of other things. One of the things I need to figure out is how I'm going to get my new barrel chambered and fitted. I know the guy I sent you to would rebore a .303 barrel to .375, chamber it and such, but I haven't yet talked with him about chambering a completely new barrel.