I always use a lead 135 BNWC for service or Action match in a S&W revolver. 38 special load is 4.0 APS350 or 4.0 Bullseye, or any of the fast powders. Produces a very accurate round and will carve out the centre of the target. For a soft load 3.0 Fast powder (MAX) with a 148 HBWC and again very accurate.