For the last year I have ben buying the discontinued powders so have enough of most except for PB..but I really haven't used it much in the last 4 or so years. Just had a friend give me 6 pounds of 4759 in an 8 lb can. The only powder he was loading..cast bullet rifle shooter. After the new powders get in top production...I wonder what other powders they will discontinue in the IMR line?? You know it's gonna happen!!