In terms of power feeding the way I see it for babies that are always hungry,for example my cinnies are about 74 grams and eat on rat fuzzies and by the 3rd day their ready to strike at nething that comes near the rack smelling like food.So in case like that I feed them every 4 to 7days,once they reach over 500grams I feed them sm rats every 7 to 10days and the next day if they still look hungry I give them one more smaller sized rat.I have never had any over fed ball python nor have I had a BP throw up.