The application discloses around baler (10) for forming a bale from a crop product, comprising a first bale forming chamber (20) provided with a first bale forming mechanism；a second bale forming chamber (30) provided with a second bale forming mechanism；a feeding mechanism (40), comprising a rotor (40a) rotatable around a rotor axis (110) of the feeding mechanism (40)；a transfer mechanism, comprising a bottom section (50) of the first bale forming chamber (20)； and a density controller (80), configured to control a density of a preformed bale formed in the first bale forming chamber (20)；wherein the density controller (80) is operably connected to the bottom section (50) of the first bale forming chamber (20), the bottom section (50) being movable with regard to a zero state position, and moving in a negative direction past the zero state position to control the density of the preformed bale and moving in a positive direction returning to the zero state position and beyond the zero state position to transfer the preformed bale into the second bale forming chamber (30). Furthermore, a method for forming a bale from a crop product in a round baler is described.
