Did it twice many years ago on WWII era un-grooved Springfield stocks when doctoring them to use on early '03's. I used a router table and with a fence, and a round bit. Lowered the stock onto the spinning bit with the upper edge of the stock against the fence and pushed it ahead to the stopping point. A little work with fine sand paper to blend the ends and edges and Voilá. Rifles are long gone or I would post a pic. One couldn't tell them from arsenal original save the lack of inspector's stamps.
