At 16:30 CDT, a Piper Twin Comanche lost power and was damaged in a forced landing near McAlester. The two occupants were not injured. The pilot stated that shortly after takeoff, climbing through 300 feet agl, the left engine quit. He attempted to restart the engine, then elected to feather the prop. At that point, the right engine started to sputter. The pilot said the right engine never completely failed but he was unable to maintain altitude and decided to land the airplane in a field approximately two miles south of the airport. The pilot reported that he had refueled the airplane with 90 gallons of fuel prior to his departure but did not sump the fuel tanks.