Having coated a few things, and the barrel nut on the Savage making removing the barrel easy. Take apart, degrease. sand blast, degrease, degrease, degrease, assemble, degrease, and touch up. Oh did I mention degrease.

On a barreled action you don't have to take the barrel apart, it probably is overkill, but you'd get the best possible finish. Brake cleaner is a great degreaser that gets into small places and evaporates clean, acetone too.