A friend just found me two pounds of Dupont 3f blackpowder. I have always used Pyrodex in my TC White Mountain Carbine, 50 cal, will the 3f work? I know it doesn't degrade over time like Pyrodex, can I store it outside in my shed? its dry but this is Vermont and sometimes the temp gets 20 below zero, then up to 90 in the summer, Any advise on using and storing 3f blackowder appreciated. Thanks, Craig.