I have a question about loaded factory rounds. I am wanting to use the brass in the loaded factory rounds that I have in boxes. I am mainly wanting to save barrel life and not put unessesary rounds down the barrel just to get empty brass to start working up loads for my 7RUM, or my 300RUM. I am wondering: would it not be wise to pull the bullets from the factory rounds and start with fresh brass? But then there is the live primer. What should I do about that? Do I fire off the live primer so I can put in the desired primer? I dont think it would be wise to try and deprime live primers and resize to start loading my own loads. I just have all this brass sitting in boxes that is unfired and I dont want to burn through all those rounds just to get empty cases to start up my own loads. Does anyone have any suggestions? Would it hurt my rifle if I were to pull the bullets and empty out the powder and fire just the primer? I don't think that I can deprime a live primer can I? Thanks for any thoughts or opinions. Or slaps across the face for that matter.