What is the feasibility of using .308 brass and resizing it for 6.5 creedmoor. I am starting to load for 6.5 and thought I would run a .308 through the sizing die. It seemed to work. The case neck is a lot longer so it will have to be trimmed. Will the outside of the case neck need to be reamed? Never tried this before so I would like to know if its worth it?