Pat,
I think Jo's explaination above probably addresses your comment. I might need to do another experiment, in which I flip the egg 24-48 hours after being laid, as I have always thought that 24 hours was the accepted thinking on not being able to rotate any longer. I will see if we have another clutch later this season that I can risk an egg for science.
Thanks for the post. That is very interesting. Where did you obtain that info? Also, is that data specific to Ball Pythons, Reptiles in general, or eggs in general? I was just wondeing how much bearing this had on BP eggs.