In a large bowl, whisk together flour, baking powder, and salt. Using a pastry cutter, cut in shortening and butter until combined.
Make a well in the center of flour mixture and add eggs; stir until just combined. Slowly stir in water until a dough begins to form. Turn dough out onto work surface and knead slightly until dough is smooth. Form dough into 2 disks, one slightly larger than the other, and wrap each with plastic wrap. Let dough stand at least 20 minutes before rolling out.