I build custom mausers from time to time. They are all blued steel with nice walnut for stocks. I put 2 or 3 layers of duct tape lengthwise down the barrel, and use a hair dryer to have absolutely no wrinkles. I spray brownells release on the whole mess, and bed the entire action area and barrel channel. This really seals up the barrel channel to prevent anything from being absorbed in there. When you remove the barreled action, everything gets cleaned off, and a wire wheel makes short work of the duct tape adhesive. The steel gets blued, and when you put it back together, the space where the duct tape was leaves a nice even free float. I'm building my first long range rig right now, and an thinking that the duct tape will start 3 or 4 inches down the barrel rather than at the lug, and then I will have a barrel pad to go with it. Thought and comments appreciated.
"It is not the critic who counts, not the man who points out how the strong man stumbled, or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena, who's face is marred by dust and sweat and blood, who, at the worst, if he fails, at least fails while daring greatly, so his place shall never be with those cold and timid souls who know neither victory nor defeat."