Storing materials

I have my reloading tools and materials setup in my storage shed outside. Wondering how hot in the storage shed is to hot to store materials(powder and primers)? Any thoughts and experiences would be appreciated. What effect will the heat have on the powder and primers?

All of my components are in an insulated, not cooled, steel building. No bad things have happened in several years, very consistent ammo is produced from those components, as well.

mines all inside an air conditioned walk-in closet


FiremanJG's nightmare, sorry, I wish I could afford a climate controlled "magazine"

Same here, do not know how long supplies will keep that way but have used some powder that was 20+ years old. Primers well used some CCI small rifle primers in plinking ammo that had a tag from Gibson's on the package priced at 75 cents. I have been loading 39 years and primers were a dollar per hundred when I started loading.

Air conditioned room...I'm not going to load ammo in the heat we have here during the summer.

Modern powders and primers will last being stored like that especially if they are in new, unopened containers. It really takes extreme temperature and moisture to quickly degrade them.

I'm with Deerhunter, I don't like to sweat when I reload.