Had party Saturday. Slow cooked pork BBQ, coleslaw, baked beans, and boiled red potatoes. 50 people invited, 35 showed up. Man who helped cook the BBQ said 2 lb raw per person. I thought 8 oz raw per person. I compromised and bought about 50 lb of bone in shoulder. I have 15 pounds of cooked BBQ in the freezer even after taking 5 pounds to Father's Day supper. The pork was cooked for about 4 hours, I didn't weigh after cooking, but I know we did not have 50% shrinkage some sites say you get. What is best rule of thumb when buying meat and veg for a crowd?