A coated or carbon fiber rod. Don't kill your barrel with a steel or sectional metal rod and if you want to be a step ahead of the crowd, get a good quality bore guide. The snake has a place in the box for emergencies when a rod isn't available. My son's friend thought I was kidding when I told him his sectional rod was tearing up his lands. A year later his groups went south so I showed him what damage that rod did using my borescope.