How Long to Cook a Turkey. Total cooking time depends, of course, on the size of your bird, and a meat thermometer will always be your best friend when it comes to being certain it’s cooked to the proper temperature (165-170 °F).That said, here are some general guidelines based on an oven temperature of 350°F, our preferred temperature to roast turkey.
https://www.chowhound.com/food-news/55327/how-to-cook-a-turkey/