What I want to do is try crossing purebred Cornish roo (yes, I know the difference between purebred Cornish and the meat breeds) over various breeds of dual-purpose hens, to see what makes an acceptable table bird for my own tastes. One of the reasons I want to do this is so that I can maintain a sustainable flock of meat producing birds, without being dependent on buying hatchery chicks every time I want meat birds.
I can't do that with the C-X's. This would also give me the flexibility of hatching out smaller numbers at any one time, so I could raise and process a dozen at a time (or thereabouts) and not have such heavy processing days when it's time to butcher. Over time, with some luck, perhaps I'll have a bird of cross-breed origins that can breed true and be a sustainable meatish breed, even though they will not be as big as the Cornish X's.
An acceptable table bird,
for me, would dress out to around 3 1/2 to 5 lbs by the age of 12-14 weeks, and be tender enough at 10 weeks to fry, (even if it was a little chewier than the X's, that's ok) tender enough at 14 weeks to roast. Healthy enough that if I wanted to keep some of the hens and a roo for further breeding experiments, they wouldn't drop dead from CHF. They'd be fairly active and like to run around and forage in the pasture.
There are a couple of individuals that, for some reason, take great issue with me or others, for choosing to try this, and seem to find the whole idea an affront to them, personally. It isn't. It's just my choice, for myself.
Sustainability is important to me. I want to know that if something weird happened, and we couldn't get the hatchery meat chicks, I'd still be eating chicken, even if it's all crock pot birds. That's not a concern for some, and I understand that. I don't care if others choose to raise X's or any other kind of bird, that's their choice, and none of my business.
For those who like the X's, and have done well with them, great. I'm happy that you have birds you're pleased with. I'm happy to see people raising their own meat, regardless of what breed they choose.
Hey I applaud any further attempts at self sufficiency but you might want to start with a leg up on your project. I found THESE folks after quite a search. It's their cornish crosses I'll be getting here.
http://www.myoregoncoast.com/index.php/YachatsValleyHatchery/OurChickenBreeds
Thought it might help out to start with birds already capable of full maturity, free range and naturally breeding.
Good luck!