Pistols you should have three classes of burn speed, slow medium and fast. How much you shoot of what determines.
Rifles you should log what you shoot and stock your hunting and target loads. If I could live the early 90's again I would get a Lyman manual and make a list of every powder common in all I shot. There are a few powders that just work in many rifles and back then I only had 7 or 8.
Shotguns? I bought a reloading set up in 78. I sold it in the 80's and last bought shotgun shells in a hundred pack of trap loads 5 or 6 years ago. I know I have more than 50 left.
What works for you will not work for me and vice-versa.