Preheat oven to 400°.
On a floured surface, roll pastry into a 12-inch circle.
Fit dough into a 9-inch pie plate, trimming the edges.
Combine flour and sugar in a bowl. Whisk in eggs and milk.
Arrange berries on crust. Pour egg filling over fruit in pie shell. Bake for 10 minutes.
Reduce oven temperature to 350°. Bake for 45 to 50 minutes more, until knife inserted in center comes out clean. Cool on a wire rack.