I am looking at my Lyman 48th edition reloading book. I am trying to figure out what powder to stat with to reload my .45 auto. In the book it gives you the name of some of the recommended powders to start with. Like Bullseye, Unique and a few more. But Gander Mt dose not sell these brands. And I don’t see them on on-line places like Powder Valley. How do I know what to use for powder if I can’t find the brand the book tells me to use. Thanks