People! Listen! The things that are sold as scones in the US are not what real bakers in the US would call a scone. A real US scone would be a slightly sweet, not dry, very rich biscuit like pastry. I say bicuit like since its main source of leavening is butter and baking powder rather than yeast.
I.e. it is not a bread or a muffin. This is from the Fanny farmer cookbook C. 1918. If you want 
my recipe which really kicks hinder PM me.    
            2 cups flour
         1/2 teaspoon salt
             4 teaspoons baking powder
         4 tablespoons butter
             2 teaspoons sugar
         2 eggs
             
          Mix and sift together flour, baking powder, sugar, and salt. Rub in butter with tips of fingers; add eggs well beaten (reserving a small amount of unbeaten white) and cream. Toss on a floured board, pat, and roll to three fourths inch in thickness. Cut in squares, brush with reserved white, sprinkle with sugar, and bake in a hot oven fifteen minutes. 
  5  
              2 cups bread flour
         1 tablespoon lard
             5 teaspoons baking powder
         1 cup milk and water in equal parts
             1 teaspoon salt
          
             
          Mix dry ingredients, and sift twice. 
  6   Work in butter and lard with tips of fingers; add gradually the liquid, mixing with knife to a soft dough. It is impossible to determine the exact amount of liquid, owing to differences in flour. Toss on a floured board, pat and roll lightly to one-half inch in thickness. Shape with a biscuit-cutter. Place on buttered pan, and bake in hot oven twelve to fifteen minutes. If baked in too slow an oven, the gas will escape before it has done its work. 
  7  
              2 cups bread flour
         2 tablespoons butter
             5 teaspoons baking powder
         1 cup milk
             
          Mix and bake as Baking Powder Biscuit I.
   
My Breakdown:
  Scones Vs. Biscuit
  S: Pastry or ap flour (less protein, i.e. less gluten, means less chewey, more crumbly)
  B: Bread flour More protein i.e. more gluten, means chewier, flakier ,less crumbly)
  S: sugar (sweeter)
  B: no sugar
  S: eggs (richer)
  B: no eggs
  S: twice as much fat (richer, smoother mouth feel also all butter rather than half lard means slightly more moisture and more butter flavor, lard is comparatively neutral in flavor)
  B: half as much fat (more bready tasting, lighter in a less rich sense of the word
  S: the liquid is made up of eggs and cream (how rich is that?)
  B: the liquid is made up of either milk or water and milk 50/50 
  
The upshot is that a proper American scone should be characterised as “Rich, moist, crumbly, and sweet” If anyone tries to sell you anything different tell them (expletive deleted)  ß ok, who gets that reference?