Please read this quote from the video description before you tell me that I'm just trying to show off my "awesome skills".
Some people don't seem to understand the point of this video. Its purpose is to show the complete lack of a ballistics system when aiming without scoping in. There is no weapon sway or recoil. Stamina does not matter unless you look down your scope. The few missed shots in the video are entirely due to the ridiculously large crosshair. Playing this way shouldn't be even remotely feasible. I really hope they'll release a patch for this because, besides this and the linear tutorial mission, the game is pretty great.