Granted, R19, and R22 are very close to each other, and for the great majority of loaders the differences wouldn't be meaningful. But for those of us that seek max safe velocity along with max accuracty...haveing powders that fill small niches is a good thing. R-19 is a great powder in '06 based cases with bullets that are on the lighter for caliber end...ie 140s in the .280, 130s in the .270, 150s in the 30-06.
