Has anybody here done this? I know I can get it done by a shop on the west coast but wonder how difficult it really is. I have relined .22 rifles and that is easy enough. According to Cartridges of the world, it is a .308 caliber bullet and I do have some .308 barrels here although I do not know the twist rate (yet). CotW states a 7.9" rate of twist for the 7.63 Mauser cartridge. One question I have is the liner stepped or larger in diameter at the chamber end as in does the chamber get replaced too? The pistol I want to reline is a Bolo so a apprx. 3.62" barrel and I think I could turn down a section of rifle barrel that I have and if required, use the tool post grinder to finalize the od and minimize deflection on the thin walled tube. Any comments?