In handguns, I'd like to add .460 Rowland to the mix, but I don't want to chase the brass, so probably the most likely would be .44 Rem Mag, which I've avoided thus so far. I keep telling myself that .45 Colt does everything .44 Mag can do. I know, I'm fibbing a bit. I really should load for .223/5.56. I don't know why I don't.