What power level should i when cooking 16 pound turkey?

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How to Cook a 21.5-Pound Turkey at 325 Degrees Fahrenheit ...

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Nov 20, 2017 - Expect it to take 4.5 to 5 hours to cook a 21.5-pound turkey at 325 degrees Fahrenheit -- if your turkey is unstuffed. If it's full of your favorite stuffing, add at least 15 minutes to the total cooking time.
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This table from the USDA is based on a 325°F oven, and a fully defrosted or fresh bird. (For an unstuffed bird, we're talking roughly 15 minutes per pound.) If you want to cook a frozen turkey, it will take at least 50 percent longer than the recommended times.

Cooking times will differ depending on whether your bird was purchased fresh or frozen. Plan on 20 minutes per pound in a 350 degree F oven for a defrosted turkey and 10 to 15 minutes per pound for fresh. 4. A turkey will cook more evenly if it is not densely stuffed.

Best Turkey Cooking Tips : Food Network

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According to the USDA, when thawing your turkey in the refrigerator, you'll need to allow 24 hours for every four to five pounds. Don't bother with the math-here's a table: 4 to 12 pounds: 1-3 days. 12 to 16 pounds: 3-4 days.14 Aug 2012

How long does it take for a turkey to thaw? ' MyRecipes

www.myrecipes.com/how-to/cooking-questions/how-long-turkey-to-thaw How long does 16lb turkey need to defrost in the refrigerator Google Search

What temperature do you cook a 13 pound turkey at?
After about 3 hours, insert an oven-safe thermometer deep into the thigh without touching the bone. Begin checking the turkey for doneness about 30 minutes before the recommended cook time. Your turkey is done when the temperature with a meat thermometer is 180° F in thigh and 165° F in middle or stuffing.

How To Roast a Turkey ' Butterball®

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at 350 chart Turkey Cooking Time Guide Allrecipes Dish
at 325 chart How Long to Cook Turkey in One Easy Chart

Between 300 degrees and 350 degrees for 4 to 5 hours. Add one hour if the turkey is stuffed.

Always use an oven bag is used to promote even cooking.

Microwave on MEDIUM (50% power) for 7 to 9 minutes per pound rotating dish every 15 minutes. Not recommended for turkey over 12 pounds
Use an instant-read thermometer after cooking. Turkey is done when thermometer reads 180 degrees to 185 degrees F for whole turkey or 170 degrees to 175 degrees F for turkey breast. Insert thermometer through **** in oven bag into inner thigh for whole turkey or into thickest part of breast for turkey breast.
For easy slicing, let stand 10 minutes after removing from microwave oven. To open, carefully cut or **** top of oven bag. NOTE Microwave directions were tested in 600 to 700-watt microwaves. Higher or lower wattage ovens may need adjustment in cooking times.

This is the site for the manual:
http://www.rivalproducts.com/manuals/MANUALS/RO188BR_43_81844057.PDF

However,
The Rival manual suggested 375 for pre basted or 350 for fresh 9-14 minutes per pound. In my experience this is too hot. I use 325 for 4 to 4 3/4 hours at 325 for an 18 pound turkey; a 21 pounder takes about 35-45 minutes more. The USDA now uses 165 as the end point temp (down quite a bit from a few years ago), but if you stuff, that has to be in the middle of the stuffing, and the turkey will overcook somewhat while it gets there. Stuffing adds about 2 minutes per turkey pound to the cooking time.
All experts agree that turkeys cook better and safer if unstuffed, so considering that you will have to make an extra pan of stuffing to have it for everyone, you would be well advised to cook your turkey unstuffed and use some of the drippings to flavor the pan of stuffing while the turkey rests.

The manuals are basically the same and a related manual is here:

http://www.rivalproducts.com/manuals/MANUALS/RO188BR_43_81844057.PDF

But they recommend 375 and I find that the turkey is much better at 325. The Rival manual suggested 375 for pre basted or 350 for fresh 9-14 minutes per pound. In my experience this is too hot. I use 325 for 4 to 4 3/4 hours at 325 for an 18 pound turkey; a 21 pounder takes about 35-45 minutes more. Do start checking the end temp with your instant read thermometer about a half hour before it "should" be done.
The USDA now uses 165 as the end point temp (down quite a bit from a few years ago), but if you stuff, that has to be in the middle of the stuffing, and the turkey will overcook somewhat while it gets there. All experts agree that turkeys cook better and safer if unstuffed, so considering that you will have to make an extra pan of stuffing to have it for everyone, you would be well advised to cook your turkey unstuffed and use some of the drippings to flavor the pan of stuffing while the turkey rests.

The formula for calculating turkey cooking time is 3 minutes per pound, then add 5 minutes to total cooking time, rounding to nearest minute: 13.86 lbs. x 3 mins           41.58 mins Plus 5 minutes                + 5.00 mins                                       =46.58 mins Total cooking time             47.00 mins.

Insert cooking thermometer into the deepest part of turkey and make sure an internal temp of 180 F is reached.