Thanks for the tip. I only got through maybe 75 cases before I starting realizing the firing pin indent in the primer had a ridge on the edge of some and was throwing the measurement off. Then I just lost all motivation since I don't have any components.
I haven't reloaded for rifle yet but perhaps I need to re-read the section in my manuals about rifle case prep while I try to track down the stuff I need/want/can-afford.