“Have friends who re prime them.”
I’ve known several who have worked at Federal Cartridge. The primer room is designed to blow “out” the side of the building instead of “in” when things go sideways.
It is not to be taken lightly. In the “old days” of black powder, explosions were not uncommon, from what I have read.
I had a neighbor who made his own black powder, pretty simple recipe. I never liked the smell of sulfur, especially burning.
There are safe ways to re prime, primers. Some actually put the wet primers into the brass before it finishes drying. Most work the powder dry and drop water+ into cup. They dry pretty quick. Made in small batches, it is not nearly as dangerous.
The success rate of re primed, primers can be very close to 100%. It is a slow process. But if none are available, it is good to know it can be done.