I must have 30+ or more powders, but most are in 1 lb. cans and are in various stages of emptiness. One HAS to try a LOT of powders to see what works best, at least he has to if he wants the very best accuracy. When you find what works best is the time to order the bigger cans of that powder. Thus, I think most of us wind up with numerous powder cans at varying stages of partially being filled, and larger kegs of the powders we actually use. Having numerous small lots of powders is an asset for those of us rifle loonies who like to trade a lot, too. We all would like to minimize our "stuff," but reloading, where we HAVE to try different powders in differing guns, isn't a place to compromise, IMHO. Over time, too, it gradually builds up a stock of various stuff to try that didn't work out at top levels the last tiem.
However, those who are OK with less than top level accuracy, "hunting accuracy" it's often called, can definitely pare down their stash. Very few are lucky enough to have the same powders work in very many guns across the board. FWIW?
