This members has freedom ranger eggs due to hatch now! It would be interesting to see how their chicks do! https://www.backyardchickens.com/threads/my-own-variety-of-meat-birds.1614753/
After doing a search on 2nd generation freedom rangers and reading old posts from other members (here)I don't believe its a good idea.Not only will they not breed true , don't lay a lot of eggs and most of them don't live long