OldMtnMan,
The passage you are asking about comes from Delineations of American Scenery and Character by John James Audubon (Simpkin, Marshall, Hamiton, Kent & Co. Ltd., London, England, 1926, pg. 282).
"Delineations..." is a compilation of essays that reflect life on the American frontier in the first quarter of the 19th century. This essay is "A Racoon Hunt in Kentucky," and Audubon is invited along. He is speaking of "the bold Kentuckian, his sons and a stranger," noting how the master hunter is loading his flintlock for the chase. The process of measuring the powder is explained thus:
"...He takes from his bag a bullet, pulls with is teeth the wooden stopper from his powder-horn, lays the ball on one hand, and with the other pours the powder upon it until it is just overtopped..."
Be safe and may God bless you all,
Denny