All, Months back I bought several jugs of powder (Blue Dot, Longshot, HS-7) from a guy that had bought out a shotgun reloader's estate. He threw in a card board container of Blue Dot for free that he said had been opened and was purchased in 1996. He said that it was opened but when I checked it out this morning I pulled the factory seal. I noticed this week that the bottom of the container had rust on it so I moved it to another plastic jug and labeled it appropriately with a marker as well as taping the original label to the new jug. I see a little bit of rust on the inside the bottom and powder is a little darker than current Blue Dot. No strong or acidic smell and in fact it smells like my other blue dot except I can smell a hint of card board. Here's my question, do you think it's any good to use?