I see you're still looking.
One area that's not too terribly far and had some leases available when I was at ATM was the Buffalo/Centerville area.
Maybe try searching there. Good luck. The land in Brazos,Washington, Grimes all seems cut up and owned by people that use it. My old neighbor in Burleson had 1600 acres that he leased for hunting, but it was always friends of his so he never advertised it. We also hunted some land on the river owned by ATM, but we did work for the school and they put an end to it when they found out.