I feel like if you have a good grasp of character specific combos, it makes all match ups a lot easier. For example, don't forget that 360+A > Gadget Finger works on Bang unmagnetized. This is extremely useful. As well, Atomic Collider, whiff j.C, j.B, 5C xx Atomic Collider, etc. works on Bang. Probably the easiest character to perform these combos on actually.
If he likes doing jump drives in your face, hit him with 5C, 4D. The 4D will CH him.
I don't play too many Bangs, so I can't offer any more advice than that.