Thanks, I'm still somewhat surprised though, that they;re not heavier since they are half CX... well they were picked up as CX from feed store however they didn't grow at monster speeds, so maybe they are one of those slo gro broilers. They did eventually get huge just not at 8 wks.
Thanks for sharing your experience. I'll be crossing my best NNs with some of @lpatelski birds that I've hatched out (and will hatch out in the future) and now I have a better idea of what to expect.