Yes, sleeving is typically to the same gauge. It would need to be a valuable Smith to justify the several thousand $ expense, and a few years wait.
Re: Barrel sleeving
Posted by Charles Harvey on August 22, 2025, 1:06 pm, in reply to "Barrel sleeving"
Several out there, though I am personally familiar with: Will Brothers Restoration Ossineke, MI 49766 (989) 471-1075
Very nice work. Not cheap, but then again, if it were, it probably wouldn't be for beans...........
Obviously, one should check with Jerry Andrews as to who he may recommend, as he is rather known as the Guru of L.C. Smith firearm repair/restoration. I did see once that he had dropped the name of Black Diamond Gunworks, but I know nothing about them.