i havent monkeyed with the hammer spring. i put in a heavier spring, and it feeds and functions perfect. i am shooting mid range 45 loads with 230 grain cast bullets. while i know they aint heavy loads by any means, i figured the heavier spring would reduce the damage to the gun. it definately recoils in a different manner. much less flip.
i never drop the slide on an empty chamber, especially not now.