I do use calipers to measure length to ogive and such. Sorry forgot to list them.really need calibers and components you use to be of real help to you
starting with good brass will keep you out of the neck turning realm
another thing that i do with a standard die, if possible, is raise the expander up to where it starts sizing (expanding) the neck before the die body finishes sizing down (collapsing)
that holds brass centered while starting the expanding process , which can really reduce runout .. but can really work the brass if the 2 sizes are drastically different
Dusty, don't want to steal this thread, but....would you explain exactly what you are doing with the expander, cannot figure this one out??? If the expander plug is raised up too high it won't deprime the case, not sure what you are suggesting????