I have just noted that the new brass that I have been using bullet runout can be very extrem. Contacted Lee , they said to turn the case necks to get a uniform in/out neck so that the expander won't kick the neck over to one side when it's beinging pulled through the case neck. This was happening to my 243 , 280 AI and 270wsm, I would roll a loaded round on the table and you could see the wobble in the bullet , others were straight. Anyone else have a simular problem ,I haven't tryed the neck turning thing yet.