Turkey At 250 Degrees Cooking Time. This will help you monitor the turkey and make sure it is not over cooked. So the new cooking time is 2 9 hours x 1 59 4 6 hours.
If you put the three factors together the cooking time increases by 2 x 0 63 x 1 26 1 59. That s just enough time to warm up your sides in the oven. The bigger the bird the worse the effect.
It seems strange but you can cook the turkey to temperatures that by intuition should result in a dessicated horrible bird think 200 degrees internal and instead end up with a bird that s moister than a bird cooked to 160 using the normal methods.
Preheat the oven to 450 f 232 c and put the turkey in the oven in its roasting pan. Well first of all the 20 pound turkey because it. Adjust by about 3 minutes per pound if it is cold. With this online tool it is easy to calculate how long to roast turkey in oven in hours and minutes per turkeys total weight measured in kilograms kg and in pounds lb turkey weight measures.