Using the 2.4g per pound of bodyweight formula above, a person weighing 185 lbs would need to consume 444 grams of protein per day. That means even if you eat 6 meals a day, you're still trying to eat 74 grams per meal.
Correct me if I'm wrong, but the old school rule of thumb was that the average person can't metabolize more than 30-35 grams of protein in a given meal. That's why people pushing those higher limits of that rule 40-45 grams were taking extra biotin and pepsin so that they could boost their stomach enzyme content to "try" to digest more per meal. (Don't know if it actually helped or not)
Based on this metabolization premise, those extra 40 or so grams of protein are going to either pass through you and be excreted or stored as fat. Neither of which are productive to the goal of gaining mass.
So wouldn't 1-1.5 grams per pound of body weight a more realistic target? Or has someone else come up with a new study as to how much protein the body can metabolize per meal, per day, etc...?