ea/dice, in their infinate wisdom, decided that instead of accurate weapons, they would impliment a "cone of fire"... thus randomizing everyone's chances of killing and getting killed.
to overcome this, uninstall or use short bursts... or, do like i do and get in a tank, where that cone-o-fire just got a whole lot bigger.
it's late, my eyes are sore, get back with me on my spelling some other time.