Powerfisher - Here's what to do. Take a case that you sized and deprimed.
Now run it into your flaring die. You want the case mouth flared just enough to start a bullet (this is so it doesn't catch on the sides and crush the case)
Run the press ram to its highest point with the empty, flared case in the shell holder.
Next, put in your bullet seating die and back out the seating plug. Screw the die down until you feel it come in contact with the case mouth.
Lower the ram and put a bullet into the case mouth and raise the ram again into the die.
Screw the seating plug down until you feel it contact the bullet. Lower the ram a bit and screw the seating plug down about 2 turns. Now it will seat the bullet enough to hold it in the case.
Now, lower the ram a bit again and screw the die in a little at a time (about 1/4 turn) and run the case up into the die. Keep doing this until the flare is no longer on the case mouth. Your die is now set to the proper depth, lock it in.
Now, do the same with the seating plug. Screwing it down a little at a time until you get the desired bullet seating depth. Then lock it in.
Your die should now be set properly.