If you don't have a head space gauge, it won't matter. The "crush fit" method can fool you unless you remove the firing pin and spring to feel the actual crush fit and not the resistence of the spring.
A great way to set your dies was taught to me by a loading mentor; use a socket from your tool box.
Pick a socket that will contact the case's shoulder somewhere in the middle when placed over the neck. Measure with your calipers from the case head to the end of the socket while it is on the case making contact with the "datum".
Do this first with a piece of brass that has been fired in your chamber. Set your die so that the shoulder has been bumped .002" . Simply size the brass and measure with the socket on top. Continue screwing the die into the press in small increments until you read .002" less than the fire formed brass....
