while inletting the barrel channel, i removed too much wood from one side. about 4 in. long. so, i cut a thin tapered sliver of walnut to fill it in. i used titebond III wood glue. with the bbl. action in the stock i slid the filler along side of the bbl. with the glue on it. after removing everything when dry. some glue was squezed out under the sliver and against the bbl. that area had no blueing on it. fortunately its below the stock wood.