In this August weather be careful of thermal differences high vs low storage. My closets top shelves may (feel like) 20 degrees warmer than the mid or floor. I put primers ammo and powder low where is is cooler and non perishables (brass) go up high.
Pick a hot day and put your hand up high in the closet. May be a surprise.
Pick a hot day and put your hand up high in the closet. May be a surprise.