Except for some problems about hit detection in very close quarters, close combat close, as well as versus players in trenches (where there are some serious hit detection issues), this problem that you describe is not something I can recognise from my own playing experience. Quite contrary in fact, 2-10 m is the optimal hitrange if you want an easy shot.
Are you sure it is not just you that are having aiming difficulties?
I am going to assume that you are joking ... I'm talking about point blank to 10 feet or so.