They also hunted in teams, peppering said bison with over a dozen arrows from quite a few mounted & camouflaged hunters working in tandem until it bled out & dropped. On the open flats, stampeding off of bluffs wasn't an option.

Doing so in these times isn't exactly legal or practical.

Even in the 1880's, when the Transcontinental Railroad passengers were using them as target practice from moving trains using .58 calibre rifles and leaving the carcasses to rot on the prairie for the sole purpose of denying the plains tribes of their primary food source as part of the manifest destiny genocide, those rubes never had to deal with a blood-panicked bull in close quarters.