Read the Need opinions-shortening vs butter in cookies discussion from I do use butter in it, but what if I substituted the butter flavor crisco?.
The original recipe call for using shortening (Crisco) for fat in the dough. I read other recipes online call for butter, so I tried both. I didn't adjust.
Shortening is an experiment comparing an all- butter biscuit versus an 6 tablespoons unsalted butter OR vegetable shortening, very cold .. I just did my own comparison bake-off between Crisco and Butter and the results.
P&G's Butter Flavored Crisco. Vintage 1988. Still Fresh. It's Digestible!