Can't speak on Briley personally for sleeving, but have no reason to question their work in any manner. Jess & Co. have run a tight operation for a quite long time. They recently changed the POI [point of impact] on a friend's vintage hammer gun w/their thin wall chokes; in this case, to suit the owner's wishes w/a full set of eccentric custom chokes & they patterned when tested exactly as requested on the grease plate. That takes precision.
Kirk Merrington also has been doing excellent & impeccable sleeving work since his arrival many years ago. Recent thread lists his number.
