Those of you that store your molds in a old freezer, I'd be very leery of storing your smokeless powder in there. For the last 6-7 years, I've been keeping the powders I use regularly (rest are stored underground, in an out building), in a old freezer in my basement shop. Couple of years ago, I open the freezer door and was hit by an acrid odor. The white plastic interior had turned yellow. The few plastic powder jugs, with metal caps, were starting to rust. Went through all the powders and discarded the suspect/suspects...............a couple of old oddball powders I had no intention of ever using again.