What cooker are you using? Reason i asked is because UDS type of heat (direct)cooks a tad faster.
I'd guesstimate @ 275 the butt should take a little over an hour per lb and the turkey will take 45 minutes a lb. Gotta go probe tender on the butt and 165 IT in the thickest part of the poultry.
Mini WSM uds style, Jumbo Mini WSM aka Jimmy, newly renovated Big Poppa Black powder coated UDS, Kettle, Potbelly Stove Smoker Smoke house w/ Smoke Daddy cold smoke generator attached.PitmasterIQ,Guru PartyQ ...Keith