Bad Guys
It seems that another factor in the equation is their motivation. It seems, especially in the infinite"SHTF" threads, we tend to assign random baddies the same motivation and focus that is found in trained military professionals. In a given situation, a round from sight unseen impacting near one of their feet would be the universal sign for get the heck away. In that case, the scoped rifle would do fine because more than likely, they're going away. On the other hand, if they do show some purpose in continuing the approach and could return suppressive fire, then it seems that something with immediate and quick firepower with corresponding distance would be needed, like an FAL, M1A, or HK91. Didn't the Korean grocers use normal scoped bolt rifles effectively for crowd control in the '92 riots?