Place turkey bones in pressure cooker and cover with 6 1/4 cups water. If using stovetop pressure cooker, cover pressure cooker and place over high heat until cooker comes to pressure, then reduce heat to medium low and cook for 1 hour. If using an electric pressure cooker, cover pressure cooker and cook on high pressure for 1 hour. Allow pressure cooker to depressurize naturally. Strain broth through fine-mesh sieve into large mixing bowl. At this point, broth can be transferred to a saucepan to be heated back to boiling and used immediately, or it can be cooled and refrigerated.
