My old model 28 loves lead cast 158-gr on top of 5-gr HP-38. If you're shootin a lot these, be sure to keep the M.V. below 1000 fps to cut down on barrel leading. My buddy ruined an otherwise pristine model 19 by feeding it a regular diet of high velocity "man-killer" loads. He insisted that Smith & Wesson designed the gun to withstand this kind of treatment. The split forcing cone proves him wrong.