The quickest and most accurate way to set this die is to put the shell holder or shell plate at the top of the stroke and turn the die in until the bottom of it touches the shell holder or shell plate. At that point, back it out a half turn which should set the die to begin giving you the proper flare to the case mouth.
It is important that when attaching a powder measure to the die, that it be tightened so that the expander plug cannot move up into the die defeating the purpose of setting it in this fashion.
