I would wait. Yeah, she is of the right size, but that doesn't necessarily mean she is completely developed. If you think about it, a thirteen year old girl could have a baby, but is she ready?
JMO!
Wayne
But isn't sexual development directly linked to size in reptiles?
I don't know and not knowing wouldn't be worth the risk for me. That would also throw the whole 300g/3 year rule out the window. Then everyone would only have to worry about weight.
Again, JMO!
Wayne
I'd be much more comfortable breeding a 250 gram 2 year old than a 300 gram one.
One thing the "rule of 3" doesn't cover is muscle tone. Females who are overweight and don't have good muscle tone, have more trouble than leaner, more fit ones. It's hard to get a 300 gram two year old that is in good shape. To get to that size, most of them have been fed so much that they've spent more of thier life digesting than exercising. If she does get to 300 grams by the time she is two, I'd give her another year but start skipping about one meal a month so she can spend some more time cruising her cage.
What if the female is large but muscular? I have a very quickly growing 09 who is not "power fed" and is very muscular (I handle her a lot and she does a lot of climbing). While I'm in no rush to breed her and almost certainly won't be until '12, I could easily see her hitting 300g by the time she's two, and I doubt she would be fat, with as much exercise as she gets.
I would still wait just to be sure. I very rarely break the 3 year old rule, and when I do I take a lot of factors into account and have had a lot of experience seeing what body types do well with it and which don't. It is possible to have a female be a fit 300 grams by age 2 but it takes a lot of handling and effort. It's better to wait, but I don't want anyone to be so wrapped up with the 3 rules that they breed thier 500 gram overwieght 3 year old and have massive problems.
@ Kanchii - For breeding purposes the female must fit all 3 criteria, not one or not two, all three.
@ Asbit - 100% correct.
@gelshark - 10.6 ounces = 300 grams, 3 feet = 0.9144 metre, 1095 moons in 3 years.
Ciao