SO I met an old timer who said he reloaded professionally for 17 years and now own a gun store and range. I was asking him about reloading in general and mentioned when I tumble my brass etc... He replied "why are you doing more then just running a brush through the case and making sure the primer pocket is free of residues?" I said I don't know, because all you hear about is making sure the brass if free and clear of all residues and the shinny new look is kind of nice. He just shook his head and said "guaranteed your reloads will be less accurate running them thru a tumbler or the brass pins/lemy shine method, because that is gonna leave residue for sure" I understand what he is saying, but what do yall think. Is he right, should I just use my case prep center and run it through the brushes and primer pocket cleaner? He has me a little confused.