Personally used a LOT of Elephant powder..& at under $5 per pound (I still have the invoices to prove it)...why not use it?
Well, I've been out of the stuff for almost 5 years now.baaaaa!
My stash was gone about 10 years ago...but My dad did have some he wasn't going to use & he gave to me.
Secret was to "sock" the powder to remove the excessive graphite dust. I used it in everything up to buffler guns & did fairly well with it.
I make a point to save at least one of every type/brand of powder I've used. Takes a lot of space, but satisfying to see how many can changes have taken place over the years. New plastic containers...no, nothing elegant about them, they belong in the trash
Slim