I went about 27-9 or so on cargo yesterday. (my best outing so far)
I was only a level 4 or so, so I killed a guy and took his gun then went on a mean arse kill streak with it. it was the ak-something another. i got a dragonfire and immediately crashed it or something, not sure what happened.
but anyways i was holding down the upstairs of the two story garage type building on the edge of the map. i always like to get in a place where people are gonna come for me