Hello DR --- FWIW, for some time now the King Ranch has been reducing the Brahman influence in their Gert herd down to 3/16 in connection with the "creation" of a new composite breed called the Santa Cruz. They have combined 25% each Gelbvieh and Red Angus plus 50% Gert to make this composite. Since the Gert itself contains 3/8 Brahman blood the resulting Santa Cruz has 3/16 Brahman. In general the environment for the King Ranch is very tough since it lies primarily in South Texas coastal brush country. The Santa Cruz are apparently doing very well and from what I read they grade better, in general, than the Gerts.
Another large ranch of note here in Texas is the R. A. Brown ranch in Throckmorton, about which we chatted a few weeks ago in connection with the Senepol discussion. I'm pretty sure that the Brown's Hotlander composite contains no more than 3/16 Brahman. Different part of the state than King Ranch, probably about 500 miles farther north and away from the coast --- so its hot, but I imagine less humidity and insects. Regards, Arnold Ziffle