Using 168-gr Sierra MK's. Setting the Lee seating die to a 2.225" oal to ogive, then changed lots without changing seating die and now bullets come out to 2.229-2.230" . I set the die to touch + 1/4 turn more. The press arm is full stroke touching bottom of die. Cal me crazy but what the f.? I realize the lot change but is the bullet seriously off by THAT much with the change in lots? this was going from a 100-ct box to a 500-ct box. In other words, once I changed lots, I have to push the bullet in .004-.005" further... what is normally acceptable difference? I did some BTO measurements on the new lot (.629" & .630" consistently on about 20 bullets) I didnt get to measure the old lot since they all got seated. thanks for any input.