Another thing you have to take into account besides carry-over cooking is wether your food may be under a heat lamp for an amount of time. One place that I worked at, we had two kitchens, one being strictly grill....and that was the last of the food to be taken out, as the back kitchen put out 3 times as much food with not much space to put it. Our grill cook would use temps even lower than those of which culinarian had listed to account for the
steaks cooking even more under the lamp. He made darn good money and for good reason.....no
steaks ever came back. Also remember, you can always throw a
steak back on the grill, but you cant UNcook it.... a little under is better than a little over. And one other thing I noticed.....I worked at a place for one season that had a very poorly lit dining room.....when I first started I had a few sent back saying they were overdone....that they couldnt see any pink, but under the lights in the kitchen they were obviously done the way they asked. You would think they would be able to tell by tasting, but whatever, everyone is an expert.

So from then on everything went out a little more rare then they had asked for and I never saw a
steak a second time.
Ciao....paisan