I recently purchased a Model 500, and, although very smooth, the trigger pull is way too heavy (IMHO) - about 4.5# in single action and 13.5# in DA. Otherwise, very smooth and crisp. I can't find any listings for reduced power rebound springs or main springs for the X frame guns, are they the same as those for a K frame (since the grip frame has the same basic dimensions as a round butt K)? If they are unique to this frame, does anybody know if Wolff makes them? I strongly suspect 500 Magnum Nut has the answer to these questions.