Is he depriming rod/pin needed on the collet die? Is that used for alignment ? I am wondering if that may be the cause of caps popping off. Thinking the pin bottoms out when the die is screwed down too far and then the rod hits the bottom of the cap and then pop goes the weasel.
I would think "popping the cap" is from "man handling" the die with a compound press. WAY too much pressure exceeding the design limits of the die. I think the aluminum cap may be a design issue, a "pop off valve" of sorts to prevent more serious damage to the die.
Lee will replace those caps for the cost of postage. Don't ask me how I know...
DF
