I have a Lee 3 hole turret press with Lee 9mm dies. I am having a problem getting the bullet seating die to be consistent. I have mad a few dummy rounds to the OAL that I like the best. I can set the die to let say 1.140 using the dummy round to set the die. but when seating the bullet they vary in OAL by up to 0.60+. Does anyone have the same problem? Or any suggestions on how to make this process more exact or is this a +/- spec of the die?