I hope I can explain the problem with the lee 4 stage turret press.
I just got it set up for 45 acp it took a while but I seem to run into a small problem
I find when the empty case comes up to meet the die on the upstoke,it seems the case it off by a little,I find the reason is the turret has a little play on top and case pressure seem to off center the case and die .I tried to re-center the turret to get the die center on the empty case it doesnt happen all the time but does need a little hand movement to get the case started into the die.