I haven't been reloading long but it seems some people have very strong opinions when it come to powder. I have only used clays, bullseye, and w231. To me I don't see much difference between these. I like w231 because it seems to flow more consistently through my powder measure. I want to lean towards clays because I use it for shotgun and I only have to keep one powder on hand. Just wondering what reasons folks choose the powder they do.