At ranges beyond 200m, 5.56 becomes near useless.
Enemies can take 4-7 shots to the chest, and 3-4 to the head.
This is for all factions, as long as the rounds hitting them are under 7.62, yes even 6.5mm.
I posted a similar issue and rescinded it, I thought it was my mods, removed those, thought only AAF Body Armor was too resilient but found out it was all standard plate armor, thought it was DEV build, reverted to stable build to no avail. It appears this broken damage model keeps appearing and reappearing throughout developement. One update it is fine, the next it is broken, rinse, repeat.