Strip the bolt and action, coat bolt with oil then run it back and forth for a good half hour (watch TV), wipe off and repeat. That will wear all the high points off. You can get more aggressive with lapping compound (keep of lugs) if you think you really need it.
If you already have 6XC dies & brass, but understand you probably have less than 1K of barrel life left. If you have to buy dies and brass, it's not even worth it. Put that money towards a prefit (if available for your action) or a blank/smith work.