I am hoping I can get some initial advice on powders. I am organizing myself to start loading for my 375 H&H. As dictated by my genetic affliction, I am at the stage of analyzing it to death. One thing that strikes me is the incredible number of powders to choose from! Should the novice reloader start with one brand and just tinker away with it. Or, do you get a selection of powders to start to compare them? My thought is to get one and use it a lot before trying another powder. On a related topic, which powder should I choose first?