Looking for a good load for the 645. Just ordered up 500 200gr semi wadcutters, going to put them in front of 4.3 grains Clays powder (this is a good target load in my past experience). Don't know whether or not the 645 will like it and I'm wondering if any of you guys out there with second and third-generation Smith & Wesson 45 experience found some things these guns like to shoot.