Quote Originally Posted by 4theSNAKElady
1500g is a good size for a female to start breeding
That is, if the snake is only 3 ft long. Good rule of thumb from what i've gathered is 500g per foot of snake, but the female has to be healthy and ready.

I would definatly take a look at 8ballpythons breeding schedule..8 Ball Pythons - Breeding Calendar
and this site is great too, with pictures! (doesn't america just love their pictures?) Markus Jayne, Ball pythons | ballpython.ca

and heres something interesting on male breeding size...http://www.jaymartinreptiles.com/articles/male-breeding-weight.pdf (he also has some other interesting articles about maternal vs. incubation and clutch manipulation on his site worth checking out.