All your brass will need to be the EXACT same length if you plan to crimp with the Hornady die. It will crimp evenly based on the case mouth being constant. You have the right steps. When setting up to crimp, you have to adjust the die body separately of the seating stem, which it sounds like you are doing. The Lee crimp die is not sensitive to differing case lengths and crimps from the sides, not from above, which I like better. I run the Lee crimp die for 308, blk out, and 223.