Or, if the above is too much of a pain for you, after you have the proper shell holder in the ram, screw the die down until it contacts the ram at the top of its stroke. Then with a deprimed shell in the holder run the de-priming rod down to where it contacts the shell base and raise it about an eighth of an inch. Lock it down and have at it. But, in my opinion, Mr Wack is right. If the pin protrudes about an eighth of an inch below the base of the die you are pretty close to the correct location.