I've heard of people power feeding their pythons and kings, but from everything I've read it's not advised unless you're trying to breed as early and often as possible. Some people suggest accelerated feeding of young snakes, which I understand, but not feeding them until they can't eat anymore.

Most constrictors have a strong prey drive and will eat as much as they can as often as they can, if allowed. (Sounds a lot like me, except chocolate is my prey.) I have a sub-adult king and she'll eat until nothing else will fit. I let her pack it in when she feeds, but I only feed her every 7-10 days. Never before the lumps disappear and only after she's been roaming the tank for a day or two. She's a year old now and 23".

Granted, everything I've learned about snake husbandry has come from the internet, so take it with a grain of salt, but the most alarming argument against power feeding has been that a snake's liver and kidneys can't handle constant digestion and could fail in middle-age.