He was American, they don’t require gun proficiency to buy a gun, as a consequence few knows how to actually hit stuff or how to maintain their guns.
Take bump stocks, the rednecks are so obsessed with full auto that they ignore that you don’t hit squad with ordinary full auto and then introduce an unstable stock.
I’m not a good shot, but 400’ is what? 120-130m? Shooting a diemaco c7 prone, even I will hit +9/10 when firing at center mass with iron sights at that distance. How do you miss that shot thrice?
I don’t know 'bout y’all, but I get them woody fibers between my teeth.