I worked out of an old WW 8-pounder for years and loved the stuff. THE BEST .45 ACP powder ever, great with 158s in the .38, and very good in any other pistol application I ever tried it in. When I used it up I bought more but it was inconsistent. Bought a pound of HP-38 and had similar results. Very position sensitive, not as accurate, and left a different fouling in the bore. I tried again a few years later, same thing. The newer powder is shiny graphite colored, the older powder had a dull grey appearance similar to Clays.