So after loading several hundred rounds now, I've noticed that no matter how hard I try, I end up with some variation in regards to OAL. Some rounds will come out right at 1.260 while others are high or low. How much variation is acceptable, if any? So far I have gone back and corrected every round that was off. Im not talking a huge degree of variation, maybe .0015 thousands at the most. Is this a common occurrence, if not how can I correct this. I haven't seen any information about this so any help is greatly appreciated.