I still use Dillon dies in other presses. I have a few powder dies for the AT-500. They lock the expander in one place. and have a little funnel for dropping powder. Works great on a Redding T-7...or on a Lee Classic cast turret press. One of the 2 or 3 Lee products worth having...in my opinion. I load a couple of cals with both turrets and use the AAT 500 powder dies with powder scoops...by Lee or my own homemade scoops