Hrithik Roshan and Katrina Kaif-starrer ‘Bang Bang!’ has collected Rs 71.72 crore in three days at the domestic box office. The film which was made with a whopping budget of Rs 140 crore, passed the Rs 50 crore collection in just two days, read a statement. Directed by Siddharth Anand, the action thriller was released on Thursday (Oct 2).