We started with 12 buff orphingtons, similar experience. Except we waited until they were two years old because they were good layers. Results: lots of fat, chewy meat.Just processed 4- 16 week old Lavender Orpington Cockerels this past weekend. Results were roughly 3 lbs dressed. Not impressed. It’s making me rethink my whole Orpington as a meat bird. Leg meat was tough obviously due to them being so much more active compared to meat birds. Breast meat was great but really not that much of it. My recommendation as I have learned from others would be the wait closer to the 24 week mark before processing. Good luck!
We're now switching over to Brahmas because they are a heritage meat bird.