You can actually make your own black powder gun percussion caps.
This handy bit of knowledge may see you through a time when stores are out of them.
Watch and see how to make your own percussion caps.
What happens when you can't find percussion caps due to shortages? Do your black powder guns get put away into a corner until resupply is possible? Not with the information in this video. The supplies you need are very available no matter what.
Watch this video and never again be at the retail mercy to by your commercially made percussion caps.