Having gone through the shortages of 1968, the Clinton years, 2008 and again this last one, it's been my practice to always have at least a two year supply of reloading components on hand at any given time. Now I've increased that to a four year supply, and I'm pretty much there.
My powder supply is comfortable and I can make most of the handgun bullets I need, either cast or swaged. I've got a good stock of rifle bullets in the main calibers I shoot, along with the powder to load them with.
Primers are the critical component, since without primers, powder is just fertilizer and bullets are just fishing weights. I'll probably add another 10,000 pistol primers to my stock, since they're currently available and reasonably priced by my supplier. I see no need to disclose what my stock on hand is, but suffice to say that it's "comfortable".
During the last two shortages I never ran out and I didn't stop shooting. I even supplied a very few close friends with primers to keep them shooting. I did have to buy a few specialty bullets, and I paid dearly for them, but their number was limited, so the impact wasn't that great on my shooting funds.
It's a warm and fuzzy feeling knowing you can weather the storm relatively unharmed. Besides, when I leave this orb, the buzzards will need something to pick over if I haven't used it all up........
Hope this helps.
Fred