Can anybody tell be about the various coatings on bullets today vs the traditional copper jacket? I realize there is a copper jacket on them now with a moly or Lubalox coat. I hear claims of less friction, less fouling, etc with statements like how many shots it takes to lay down a layer of moly in the barrel and start seeing a difference, etc. I have heard also that "once ya go moly ya can't go back"....I want to shoot some rounds that are coated by don't want to limit myself to them - they are expensive! Can I shoot with 'cheap' traditional rounds and hunt with the expensive coated types without barrel hassles?