I have the same issue. I have played all BF games and have been patiently waiting for this one to come out and was highly disappointed once I had played it. Used to have a KD of 2.9+ and now its -.8. I am wondering the same as you, why do I run out of ammo trying to kill enemy players. Meanwhile, I seem to be one hit every time. I am wondering is there a setting, a equipment slot or class that I am choosing wrong. I have tried all classes and been struggling to gain the unlocks because I am getting 1-4 kills per match. I hope that they fix this because it's ridiculous.