Where does everyone store their powder? I get a few different answers from a handful of my buddies. Some store in the garage, which gets quite hot. some store in the crawl space, which is a cool temp. We run the rounds over the chrony and there does not seem to be any 'hot' shooting going on, with a similar powder charge.
Please educate on this.

thanks

I'm sure a temperature and humidity controlled environment would be better, but the wife barely wants the stuff in the garage!!! I keep telling her, "Honey, it's not an explosive, only a flammable solid......"

I have a locked storage cabinet (in the garage!) that holds all the ammo, powder, and primers. Nothing special about the cabinet, just a large plastic one from Home Depot. I keep it locked just to keep prying fingers out. It's definitely not high security.

LWD

Mine stays in a wooden cabinet in my basement work room. The forced air furnce and central air tend to keep the humidity under control to a point, and the temp is very stable year around.

all of mine is sitting on my bench shelves. AC register blowing right on bench. Dehumidifier runs 24/7.

I keep mine in a cool dry place, that's all ya need.

I do a lot of shooting, therefore I keep a lot of powder. When I start on a reloading project and pin point a powder that looks promising, I will then get at least 8 pounds of a lot. The reason for that is when I find that final load I will have enough powder to shoot it for several years. My reloading room is in a basement in which I run a dehumidifier the warm months. I will keep a few pounds on my bench that I am working with and will have quite a bit in three electronic dispensors I use daily. The remainder I keep in a 2ft. X 2ft. 3ft. Box built out of 3/4 in plywood that is lined with two layers of sheetrock. It has a sheetrock lined hinged lid and is mounted on casters for each movement about the basement, the box alone being quite heavy. I have about 80 pounds of powder at any one time. For what it is worth to you, that is how I have stored my powder for the last five years of a 35 year reloading hobby, which supports an extensive shooting hobby. I have a son (38 yrs old) and six grandsons (up to 21 yrs) who have never bought nor fired factory ammo. Good shooting.

I keep my powder in a powder magazine in the basement about thirty feet from my bench and the primers are kept in a separate magazine about ten feet in the opposite direction.
Your local fire department is a great source to find out what is necessary to keep the amount of powder that you have safe. Your home-owner's insurance doesn't have to pay off in the event of a fire if you are storing powder in a way that is not considered safe by the fire department. My magazines have 1.75" composite walls that are rated to be fire retardent well beyond the requirements of the fire marshal in my area. The magazines have a loose fitting cover that will keep the powder from being confined, causing an explosion - they will safely vent out the top.

I seem to recall a story about someone (probably a writer, maybe Layne Simpson) having bought a 50 lb. keg of surplus power (4350 I believe) and keeping it in a freezer for several decades. Worked fine; no moisture. Hide it under that moose you shot last year. She'll never find it.
.

I walk down to the trailer park lift up the shirting on #23 and store it under their home unknowingly……

Just kidding,

Ol, Joe and phurley5 have it right.

Many municipalities use the National Fire Agency Publication NFPA 495 as law.
It in part, states that smokeless powders intended for individual use shall not exceed 20 pounds unless stored in a wooden cabinet or box with walls of at least 1 inch nominal thickness and the quantity shall never exceed a total of 50 pounds.

What's 50 Lbs?

I took the time to make two powder magazines out of 1" thick plywood. I use one at one end of the house for primers and the other over thirty feet away for powder storage.

I thought a powder vault was a waste of money until i went to try to get my gun collection covered in an insurance rider and found out that having powder around is often considered by insurance companies as something that can void their responsibility in case of a fire.

lots of specs out there for powder vaults.

In my closet. I had about 50 pounds stored in a storage locker for about six weeks. Outside temperatures got to over 100 degrees. The air temperature in the locker was near enough to bake a cake.The powder bottles were under several blankets, and in contact with the concrete floor. When I picked them up, they were cool as a cucumber...