I have never checked the runout on the unsized portion of the neck but recently I resized 50 .223 cases using my method and of the 50, I only had 7 that exceeded .002 on the sized portion of the neck. The most distorted one measured .007".
As Blackdog sez,I would think that regardless of the runout of the doughnut, it would be a better deal as it helps to reduce cartridge cant in the chamber.
Also, since the doughnut helps to center the cartridge, it has the same effect as the Bench Resters jamming their bullet into the lands with none of the perils regarding pressure or pulled bullets.
FYI, I reloaded those .223 cartridges using a Lee Press.
