Excuse me all to heck.
Any container that blows is going to shrapnel and primers are an explosive.
Powder does not need silica anything, keep the lid on it when not using. Its not like you are going to have a magic barrier while you fish out a charge. Its going to be open and on the bench absorbing whatever level of humidity there is.
Smokeless Powder is not classified as an explosive but you will note if you read the link, you want to have a gas path to vent it.
Is it rare? Yes. But its known as a toggle action. Like a plane crash, its lethal if it does and you are the one it does it to.
I won't tell you what to do of course, hopefully if it happens its only you that suffers.
But the understanding and handling of these has come at the cost of lives and lessons learned for others if not you.
nope you are not excused. By your logic the individual trays are a container, and the 1000rnd box is a container, and the cardboard case they were shipped in is a container. It all depends on the type of container, how much pressure it can contain, and how many primers you have in it.. I would bet that if 100 primers detonated at the same time in a 50cal ammo can nothing would happen as the volume of the can should be more than adequate to contain the gasses without rupturing.
Powder, primers, and loaded ammo should be stored in a cool DRY location to maximize its shelf life. Silica gel absorbs moisture keeping it DRY.
The point is a plastic container like a plastic ammo can, will flex and unseal under minimal pressure VENTING the gasses rather than exploding
Ideally you want to store powder and primers separately, but both still in a cool dry location
"is it rare? Yes. But its known as a toggle action. Like a plane crash, its lethal if it does and you are the one it does it to." Huh? What are you calling a toggle action? What is lethal if it does it. what would you be doing? as near as i can tell you are talking about rounds in a tube magazine detonating each other from recoil. in which case you would mist likely have your hand injured, but it would most likely not be lethal, although unplesant.
https://www.youtube.com/watch?v=3GkaNg6S0H4
You
are trying to tell me what to do, in a very passive agressive manner
"But the understanding and handling of these has come at the cost of lives and lessons learned for others if not you." Please, cite some reasonable examples... not the guy with 10,000 primers in a locked safe next to his bed...