I'm currently reading Empire of the Summer moon.
In one chapter, where one of the Comanche warrior chiefs and his band attacked a small outpost populated by buff hunters, skinners, etc there is the description of how accurate they were with their sharps rifles.
It describes them as "big fifties"...a sharps shooting a 600gr boolit, with 125gr BP.
The paragraph describing the incredible shooting is shown. Could those guys really have been that good to intentionally hit the Indians at 3/4mile? Or just luck or exaggeration of distance?