Grandeir maybe? she did use her boobs to reload the gun with six bullets, and then shoot 8 people before re-loading again (yes, I did count that in some episodes). Then again, you shouldn't watch Grandeir,it sucked, really sucked.
Are you serious? How is that even possible to reload by using breats. It just dosen't make sense. I still want my big breasted character who can fight with her breasts in either an anime or fighting game.