As stated above, it demonstrates good neck tension. And, partial resizing can eliminate the look, without eliminating the benefits. That said, I would look at a loaded round closely, to ensure that the bulge is the same all the way around. I had to get a slightly larger expander stem for my .44 dies when loading .431 bullets (for a Ruger I no longer own). When seated after using the stock expander, they were .001-.002" out-of-round. A slightly larger expander corrected it.,,,,,,,,,,,,,,,,Bug.