THE PLT LANDED AT EASTMAN, GA, WHERE HE PLANNED TO REFUEL, WHILE EN ROUTE FROM MILTON, FL TO SUMTER, SC. FUEL WAS NOT AVAILABLE, SO HE DEPARTED FOR SWAINSBORO, GA. HOWEVER, HE DECIDED THAT WOULD BE TOO FAR, AND PLANNED INSTEAD, TO LAND AT DUBLIN WHICH WAS 30 MI CLOSER. WHILE IN A CRUISE DESCENT TO DUBLIN, THE ENG LOST POWER. THE PLT STATED THAT HE TURNED THE ELECTRIC FUEL BOOST PUMP ON & NOTED NORMAL FUEL PRESURE, BUT WAS UNABLE TO RESTART THE ENG. HE STARTED AN EMERGENCY LANDING ON A ROAD, BUT THERE WAS CONFLICTING TRAFFIC, SO HE LANDED IN A RECENTLY PLOWED FIELD. APRX 60 FT AFTER TOUCHING DOWN, THE ACFT NOSED OVER. THE PLT SAID HE REMOVED THE FUEL CAP TO SEE IF FUEL WAS REMAINING. REPORTEDLY, SOME LEAKED OUT, BUT WAS NOT COLLECTED OR MEASURED. DURING THE INVESTIGATION, 1/2 GAL OF FUEL WAS FOUND. NO FUEL WAS FOUND IN THE FUEL LINES FROM THE FUEL PUMP. THE ENG OPERATIONALLY CHECKED NORMAL. FUEL CALCULATIONS INDICATED, ALL FUEL WOULD HAVE BEEN CONSUMED, EXCEPT APRX 1 GAL. ABOUT 1 GAL OF FUEL WAS UNUSABLE.