Must take a lot of grinding to reduce an elephant to powder.
Nope. You just have to feed one the right ingredients. If you were a Rocky & Bullwinkle fan. Remember the guy bringing up the rear of the circus parade?
That stuff looked like the grain size was way too big for my squirrel rifle. Big bore only?
Yes. Those big bore guns the English hunters used in Africa on Elephants. The agents of their own doom?
A great book on muzzleloaders in Africa is, 'A Hunter's Life in South Africa' by R Gordon Cumming. Great stories and a lot of dangerous situations while he hunted South Africa in the 1840's. If you are a fan of the English gunmaker I highly recommend this book. James Purdey, John Dickson, Westley Richards, just to name a few, played prominent rules throughout Africa during the muzzlelaoding period and beyond. All these firms still building guns today, granted for the ultra wealthy, but they are still building guns.