I wanna see pics of these big birds when you get them rolling. Not that I don't believe you but those are big birds. Makes this 9 lbs bird I'm cooking look like a Cornish hen!
When it comes to turkey's I've bought in to what many here preach & teach - Hot & fast. I'm gonna cook my 9 lb'er for 3 hours @ 325 and then crank it up to 400 to finish it off. Looking for an IT of 160 (minimum.) I left the little red poppit in the bird to see when it popped and it did not. That tells me they're not reliable for when the turkey is cooked. In my case if I had relied on the poppet I would have over cooked and had a dry bird.
Did my test run last week and it was perfect. I'm not changing a thing!