Having loaded roughly 16000 rds on my two Lee 4-hole Turret presses in the last couple of years, I think I'm ready for a 550B. Questions: Will my Lee 4-die sets work? Will the powder dies of the Lee work with the Dillon powder measure? .....I load .45acp, 9mm, and 38special.....I do not load for rifle, and probably never will. One more question: because I only load for pistol, would the Square Deal B or the 550B, be the best choice? Thanks for the help.....