I agree I'm not sure why the goal for home grown chicken has to be a humongous turkey sized bird. I'm leaning towards smaller is better (who wants to eat the same chicken all week?) and I've been wondering if crossing bantam to standard cornish might be an idea. Or bantam cornish over dorking............
Heritage Cornish/Indian Game was a very popular cross in Britain and America prior to the CornishX era. The Indian Game was crossed over many breeds to improve breast quality in the offspring of hens who laid more eggs.....
....I've been focussing my reading on books from before 1950 and authors who worked with dual purpose breeds, so my information is dated. But in fairness I believe those were the people who knew these breeds best. Another tidbit I've gleaned from my study is that dual purpose birds were more selectively bread for their meat qualities back then, so that while you see a scrawny looking carcass today on a Barred Rock or Wyandotte, many of Another tidbit I've gleaned from my study is that dual purpose birds were more selectively bread for their meat qualities back then, so that while you see a scrawny looking carcass today on a Barred Rock or Wyandotte, many of those birds produced a significantly prettier carcass with a fuller breast than to same breeds do today.
My Wyandotte flock provide me with nice sized birds for the freezer.