I have a factory 110fcp 338 lapua mag take off for sale, .85" at the muzzle, fluted, does not include the factory muzzle brake. Has approximately 125 rounds through it. It will shoot under an 1" but I'm picky and like to be honest, its kinda rough (through a hawkeye bore scope). I believe with some lapping (fire or hand) that it could be a consistant 1/2-5/8" barrel, still not up to par for me but would likely make a good barrel for the average shooter. Cosmetically its in excellent shape. 100.00 OBO shipped.