I just posted on this subject over at Modern Muzzleloader. Before the pandemic, and the new shooters added because of the political situation, there were 50 million hunters/shooters. Approximately, 5-7 million new hunters/shooters have been added to the total in less than a year. That's a 10%-14% increase, which is significant.
Between the panic buying, and those 5-7 million new shooters getting outfitted, and most of them enthusiasticaly purchasing ammo to shoot, center-fire ammo shortages started early in the pandemic. And since 209 shotshell primers are almost exclusively used as a source of ignition in modern inline muzzleloading rifles, those ran out quickly as well.
When center-fire ammunition and components started drying up, a HUGE proportion of the now 55-57 million shooters/hunters that previously had ignored muzzleloading, now turned their attention to a sport that they had never before paid any attention to.
It doesn't take very many new people added to a very small population of traditional, and inline muzzleloading shooters to overwhelm the supply system.
I am just spitballing here, but I think I am pretty close to the real numbers.
Active m-l shooters prior to Covid-19 : 43,000
Max number of new m-l shooters: 10,000
Percentage of increase: 23.26%
Even if I have vastly over estimated the numbers, say it is only 2000 new shooters. That is still a significant addition to approximately 43,000 active shooters in a long-term stable population (4.652%). Because, all of the new shooters are going to want to shoot enthusiasticaly for at least the first couple of months that they own their weapons. Therefore, they will be purchasing a lot of powder, patches, percussion caps, flints, lubes, etc. Same thing for the inline folks.
That's why EVERYTHING IS IN SHORT SUPPLY!!!!!! A boatload of new shooters with all kinds of time on their hands to shoot. And all of the old shooters that panic purchased, stocked up, hoarded, call it what you want.
Muzzleloading is near the bottom of the firearms industry as far as sales goes. So, any company that makes center-fire components, and also makes muzzleloading components, is NOT going to put a priority on the muzzleloading components until they start catching up on their orders for the center-fire components. That's just how the bean counters think, and unfortunately as muzzleloading enthusiasts, we are at their mercy.