Re: lee breech lock challenger press and bullet runout
<span style="font-style: italic">"I find that concentricity is more a matter of dies than the press. ... Also, uniform neck wall thickness."</span>
Roger that, meaning concentricity doesn't automatically come in a press or die box of any color. If you have a decent concentricity gage find out where in your loading procedure your runout is coming from and fix it there, not at or after the end of the process.