Anyone ever outcross Cornish X with heritage Birds?

[Egg Snatcher]

I will be going with that slower growing strain of the jumbo variation. In the Netherlands growing your own meat birds is not really a thing. So we can't just buy rangers, I don't even think we have those here at all. We do have heritage breeds that are equivalent to new hampsires and delawares in terms of meat. But I don't like those and since I will be outbreeding the amount of meat would take a hit. Ofcourse now the problem lies in keeping the CX alive long enough to lay eggs.

When I had my Cornish cross I never put them on a diet. My hen lived with my bantams and had access to layer crumble all day. My hens layed closer to a year old and preferred to lay in a nesting box over the ground.