I'm reading a thread now from the beginning, the posts I'm reading are from around April 2015, so I don't know about now, but at that point, there were 4 people on the thread that had CX that were very close to one year old and healthy (one CX per person). What they did is feed 2 times a day, and only let them have food for 10-15 minutes before removing it, also, they free ranged them to encourage movement. They ran, jumped, one attempted to fly sometimes, and estimated weights were around 20 pounds and the size of a heritage turkey hen. These birds are the exception more than the rule, but it can be done to get them to laying age and rather large without health issues.
Thank you - I would like to try and raise a big CCX rooster that we could have along with a heritage BR turkey Tom for Thanksgiving. My wife and I have riased 11 kids, most of them are married and I have 6 grand kids, #7 on the wayplus we also have the inlaws in for both Thanksgiving and Christmas so you can just imagine its quite the house full of hungry mouth's to feed. Lot of work but i wouldn't have it anyother way - I love my family.
I would recommend from reading what others did, they started with a bunch about 25, processed the big ones at 9-10 weeks (like normal) and kept the smallest to grow out, one guy processed some of those smaller ones later (don't remember how old) and they processed out at 10-12 pounds each, they ate one for thanksgiving since it was fully as large as the Turkey they would have bought.