I was looking at this article in the same respect. To further my current storage ideas. Try this….I use a chemical safety storage cabinet. It’s double wall steel construction keeps contents temperature stable ‘enough’ especially in the garage and keeps it safe from damage. I put a locking bar across its doors using 1/4 inch steel plate on the ends and a beefy length of steel angle across its doors with locks at each end to keep it secure. Drop a moving blanket over it and it looks like an old piece of furniture. But don’t buy a new one, they’re high priced. Look for a desired size at company surplus sales or local craigslist ads. Internally all the ammo is stored in 50 cal ammo boxes with each box containing dessicant. This ought to last me for decades. Look at McMaster Carr for the various sizes.