I used to live 30 minutes from their Shawnee Mission, KS bottling plant, I have visited it on Occassion ( sometimes you could get a deal on powder) and they Bottle and package everything there. All of Hodgdon's powders are manufactured in Australia and then shipped to Shawnee Mission, KS where it is bottled and packaged. And from what I've heard is on occassion that sombody messes up either by the conatianer that came from australia is mismarked or someone accidently dumps the wrong powder into the hopper prior to bottling. But they usually catch it before hand atleast so they say. I like to think and trust that hodgdon does catch the mistake before any of it leaves the plant since thats about the only powder I use, I use Vectan, clays, tite wad, and tite group. I would say hodgdon has the best and cleanest burning powders.