I have always wondered how white foreigners " LIke Me" ever defeated the native American red man with single shot flint guns when used with in 30 yards or so as all the advantage was with the rapid fire bow and arrow!
I still get as much enjoyment out of constructing and shooting heat treated Hickory self bows with modern carbon shaft arrows as gun making and shooting black powder.
I just finished Carbine and Lance, a book from 1936 taken from military records and first hand accounts of the Ft Sill area from 1850 to 1910.
The bow was not always fatal with one arrow. There are many reports of person's shot by one arrow who survived. So a single arrow might not put you out of the fight.
A 50 caliber or much larger ball, OTOH, very well may go through and though and end you much faster.
Also, a one on one fight might turn out for the smoothbore, if the person ignored the pain and quickly returned fire with their muzzleloader. And a bow isn't a Lazer armed weapon, they missed as well.
One other thing; families were HUGE BITD, if attacked at home, a small squad were waiting to repel boarders. Many accounts of stolen livestock, but fatalities were few, usually.
It's a great book, the 7th cavalry with their Blonde Haired leader was stationed at Sill in the '60s, and had some very heavy engagements.
Also, the Spencer carbine was the Standard Issue weapon for cavalry West of the Mississippi until 1874, when Trooper's grudgingly turned them in for the Springfield.
I wonder how many Troopers bought their Spencer for the Surplus price of $10 and kept it in a saddle boot?
But OTOH, nearly all of the heavy fighting of the Red River Campagne was over by 1874.