Wipe down the bolt with a rag or sheepskin coated with a good quality gun grease (Tetra, CLP, Militech, RIG, or any other that catches your fancy). When you are done, it sould look clean with a light coat of grease, enough to feel slick but not enough to see goo when you look at the bolt. Same for the outside of the gun. After each outing, they get a good scrubbing, then recoat them.
My trigger mechanisms get a drop of Tetra once in a while, then swabbed out with a Q-Tip to remove the excess. The only reason the trigger would get a thorough bath is if I was caught in some hostile weather (snow, rain, dust, etc).