So I just ordered my Lock-n-Load and was wondering a quick question. I plan on using my Lee dies and expander/powder through with the Auto Disk Pro and happened to remember the chain my powder measures came with. It seems like you are supposed to use the chain with progressive presses but I can't figure out why. As far as the case getting charged wouldn't the measure be going through the same step as it would on a single stage press? Spring moves the disk(s) to the drop hole when arm is lowered, spring naturally returns back into place to get powder from the measure when the arm is raised...?