About a dozen years ago I bought a fair supply of H 450 to use in my .264 win mag. About two years ago I started getting low, and decided to get some more and find none. I guess it has been discontinued, but cant imagine why? Until recently,(after I ran out) it was the only powder I used in my 264 and I havent found anything that will get the same performance. So does anybody know what happened to H 450?