For a hot load. I like IMR 4227 myself. Little more forgiving and has a little less barrel flash than Win-296-H110 and even Blue Dot. In high intensity applications it's a hard one to beat.
On the mild side. I prefer Win 231. I've always considered it to be one of the best Mid Range powders ever made. Versatile and very clean burning.
Watch it!!! their both out to get us.