Preheat oven to 375°. Combine filling ingredients and set aside. To make crust, sift together flour and salt. Cut in shortening until mixture resembles coarse crumbs. Add oats and mix lightly. Add water, a tablespoon at a time, stirring until pastry forms a ball.
Divide dough in half. Roll out half of the dough on lightly floured board or canvas to form a 13" circle. Fit loosely in a 9" pie plate. Fill with turkey filling. Roll out other half of dough to form a 12" circle. Make a few narrow slits in the center of the dough for steam to escape and place over filling. Trim, turn under edges and flute. Bake for approximately 40 minutes until the top crust is a golden brown. Serves about 4.