Combine flour, salt, and baking powder in a mixing bowl; cut in shortening until mixture resembles coarse meal.
Add milk, stirring quickly until milk is blended.
Turn dough out onto a lightly floured board and knead lightly about 20 seconds.
Roll dough in a rectangular shape to 1/2 -inch thickness.
Brush with butter.
Combine sugar and cinnamon; sprinkle over dough.
Sprinkle with raisins.
Roll up jellyroll fashion, beginning at long side.
Cut into 1-inch slices.
Place on greased baking sheet with cut surface down.
Bake at 400° for 15 to 20 minutes.