I have never read of any Indians combatants with that much ammunition to spare or waste on lob shots. It's just not how gorilla warfare was or is conducted, especially when out numbered and on the run with minimal re-supply available.
They got close , struck and melted into the forest to strike again when advantage was on their side.
And yet the opening account specifically mentions the corpse of a Seminole rifleman with "50 or 60 bullets", presumably in a pouch or bag, about his person.
Recall, this was the opening months of that long conflict wherein goods were not yet depleted and trade avenues had not yet or had not long been cut.
Sorta related, I've just finished reading Richard Berleth's excellent 2009 book
Bloody Mohawk: The French and Indian War & American Revolution on New York's Frontier
You may recall that in the late summer/fall of 1779 the American side in the Rev War launched the Sullivan Expedition into Iroquois Territory, specifically targeting the Senecas in Western New York, then the largest and most remote Tribe of that Confederation.
By that time the Senecas had enjoyed decades of relative peace in their own homeland, keeping settlers and their attendant diseases and alchohol at arm's length while enjoying the full benefits of trade and technological exchange.
The journals kept by members of Sullivan's 2,000 man force are revealing.
"...[destroyed] 150 acres of the best corn I ever saw (some of the stalks grew 16 feet high) besides great quantities of beans, potatoes, pumpkins, cucumbers squashes and watermelons...
...thirty neatly built and finished houses made a fine bonfire... while the army was employed in destroying corn and fruit trees, of which there was great abundance. Many of the trees appeared to be of great age....
Canandaigua, a very pretty town, very compact and neatly built with houses much better built than any I have seen before went up in flames."
And elsewhere in the book, this from American Militia Colonel Peter Gansevoort referencing the Mohawks...
"It is remarkable that most of the Indians live much better than most of the Mohawk River farmers, their houses very well furnished with all necessary household utensils, great plenty of grain, several horses, cows and wagons."
Yet the society remained Indian, and the men from those communities went to war dressed and painted as Indian warriors. It would be no surprise though if they carried good quality firearms, and the Iroquois were the only pre-Rev War rifle culture we know of in Upstate New York.
I can dig up references and accounts of the 1830's Creeks, first cousins of the Seminoles, in Georgia referencing plantation houses, slaves, and breeding fine racehorses... all this from guys fantastically painted and garbed in contemporary portraits.
This sort of cultural exchange seems to have been universal wherever the Frontier had stabilized long enough. Weren't ALL Indians, even in those communities but no...
...as stated, you can't put Indian tactics in a box. What you CAN count on is that in the years since, popular American history will have forgotten most of the details.
So ya, weren't outlandish at all that many Seminoles coulda had first-class rifles.
Birdwatcher