I experience this often, however because I have a yearlong experience with calorie counting, the way I experience it is that I will finish a meal in the 500-800 calorie range and still feel hungry. An hour later, I will feel fine, fantastic, even. Last night I just ate til I was full, knowing I was probably upwards of 1000 calories, and a hour later I was uncomfortable. It reconfirmed for me that I need to stop before I feel full if I don't want to end up overeating. I will say that 1000 calories of nice red meat is often not too much for me, if that's the only thing I've eaten.
CW-125, part calorie counting, part transition to primal
GW- Goals are no longer weight-related