Ok im necking up 7mm BR brass for my whisper. All case are brand new cleaned and weight matched. i necked up and sizing with the die locked tight in the press. Got .10 run out. then tried with it loose in the press got around .05 now i push it half way in lift up on the press turn the case 180 and finish the sizing. but im still at .03-.04 run out. What im i missing or should i not worry. Just wait till there fired in the Gun Which should take care of the run out for the next loading right.