I'm just a bit less anal than some, I suppose. The only time I had any trouble with any rifle brass was when I used some probably twice (or more) fired Nickle plated brass when fire forming loads for my 30-06 a.i. Seeing how it's a single shot, I don't have to worry about it cycling in the action. I have a Stoney Point OAL Gage, but generally just seat my bullets to a specified COL that I have predetermined. The GameKings, with their exposed lead tips don't always measure the same, but the polymer tipped bullets usually all measure the same. I still trim the case after each firing and resize, though, just because....