It is the only powder I have ever bought that has a silica pellet pack in it to keep out moisture. The few shots I took with it just did not feel right although they went off fine and some work with the powder would have yielded some fair results. It just sucked loading I could not get it to flow through my powder flask. Some chunks of the stuff was over 1/16 in diameter!!
I will let you know how it handles moisture, it is living in one of my trucks tool boxes now. I hope all the driving grinds the powder down some and I want to see if it will shoot after a few months out in the sun, rain, cold ,snow.