Preheat oven to 425°F (220°C).

In a large bowl, combine flour, oats, sugar, baking powder, cream of tartar, and salt.

In a separate bowl, combine melted butter, milk, and beaten egg.

Add the wet ingredients to the dry ingredients.

Mix until just moistened.

Stir in raisins.

Shape the dough into a ball on a lightly floured surface.

Pat the dough out into an 8-inch circle.

Cut the circle into 8 wedges.

Place the wedges on a greased baking sheet.

Bake for 12 to 15 minutes, or until golden brown.