As a difference of opinion to the guys that have 3 or more loads for each weapon they load so in a time of shortages they have choices I go the other way and only have one maybe 2 loads for each weapon and stock plenty of componets to not have to worry about any shortages.
For pistol I stock Unique and a few pounds of H110 for the few mag loads its needed for. Unique will load most all the pistol calibers, shotgun and is a great cast bullet powder in rifles.
For rifles I stock W748 for the 223 and 30/30, Re 15 for the 243, 308, 7.62x54and 7.7X58. Re 22 is stocked for the 7mm.
I don't use a lot of the Re22 so a few pounds is good, as for the W748 and Unique lets just say I like to keep a couple pounds on hand.
I have been reloading and shooting all my weapons this past year with no worries about componets. I have purchased a few things but never at inflated prices. I have also worked up about 10 new loads for new calibers and some cast bullets I have started to cast with what I have on hand so I would have to say that my choices of powders have worked great for me. There are a few other powders in my inventory like Steel for steel shotshell loads and a couple other powders I purchased to load slugs and buckshot but once I worked out the load and loaded some up I generally don't shoot many of these rounds.