i don't have my exact calculations with me but, i think i use between 450 and 500 grams per pie for 14 plus inch shell. kinda depends on how the dough is acting that day.
1 pound=453 grams. so if i was cooking 18 pies, 11 pounds would not be enough. plus i always fark up opening at least one of them.
"YAWN"-In memory of a friend.