Abstract: A loading apparatus for loading feed stock into agricultural bags wherein the loading apparatus has a housing with a hopper, a passageway communicating with the hopper and a tunnel communicating with the passageway. The tunnel supports the open mouth of an agricultural bag to be filled. A rotor is drivingly located in the passageway. The rotor and passageway have widths approximately two thirds the width of the tunnel. The tunnel has an expanding chamber, a forming chamber and a guide member. The expanding chamber has a rear wall extending substantially vertically and has side walls diverging outwardly all with the view to accommodating the mass of feed stock received from the rotor in the passageway. The rotor has flanges on the ends within the passageway and mount plural pairs of teeth spaced about the circumference thereof.