Sorry folks...thought this thread had died. Appreciate the most recent comments. After messing around with bushing dies and collet dies and everything else under the sun I finally just gave up and resolved myself to the fact that I was going to have .0015"-.0025" of runout no matter what I tried. I went back to just using my Forster full length sizing die set for a .002 shoulder bump. And yes....I realize 1"-2" groups at 834 yds are as about as good as it's going to get. A few months ago I finished my second build....another 300 Win mag and am just now finding a load that will shoot in the .25 MOA range in it. So I'm good with that.