Last night, I load up 3 box's of ammo. Did my 7mmSTW first. measured runout, nothing new, 17 out of 20, had .004" or less. Then my 270win. Same deal. Always get 17 out of 20 .004" or less.

But then started loading my 7mm-08. Never had trouble in teh past. but almost all had .007" and some more. I tried a lee shell holder. Setup my seater 3 times. Squared the seater die. Turned 1/3 turn several times before seating. Couldn't figure it out. Only thing I saw I didn't like, was my shell holder in my rockchucker rocked some. And shell wasn't tight. It was a No3 RCBS. I have loaded probably 1000 308's and probalbly 100 7mm-08 in the past without issue. Always get2 or so with little runout. Any other ideas? I set the seater up just like I always have, touch the shell mouth and back up 1 complete turn.

This is new brass. Later I will check runout of the brass alone without powder or bullet. Maybe when I sized, I didn't lube the necks good and knocked them out. Maybe lube the inside necks