OK, This may be where I am having problems. My understanding, from the literature I have with my dies, is to screw in just far enough to contact the shell holder at full stroke. I have been reluctant to experiment increasing that distance for fear that I will create difficult chambering rounds. Does the case head area expand much, if at all on firing?

Is there a procedure to determine proper adjustment or a tool to assist? Sure do appreciate your help. I've learned more lately online perusing BB's like this one than I have in searching literally volumes of real print. What a terrific resource!

One other thought, I have not been in the habit of lubing the inside of the case necks for resizing and do notice a substantial resistance on the return stroke. Could that dragging expander cause that kind of stretch?

/mike