smoothshooter
50 Cal.
It would have depended on what the hunter was using for transportation, and how much he could afford.Reading the thread on the bag molds made wonder how much lead did the trappers take with them since they had to use horses to take everything that they needed to trap and survive.
Then they had to take powder with them, again the trusty horse was needed. I know Lewis and Clark took their powder in lead canisters and melted the lead.
I read a lot and never have seen any mention on how much powder the trappers took with them. Also I never heard how the powder was package any idea? When and if they ran out of powder, they were out until the yearly gathering.
Any speculation on how much powder and how it packaged?
Most hunters and trappers were not wealthy men.
Very large extra powder ( expedition horns? ) were sometimes used. Waterproof and more durable than any wooden keg.
Trapping does not normally require a lot of shooting, so a half-pound might last for a month or two for shooting the occasional big game animal for food and possibly the hide.
The eastern market hunters were a different story. Some of them shot dozens of deer per week for the hides.