I shoot at a private range in El Campo out to 300. It's limited but is a great range where you can many times have it to yourself. I also shoot on occasion to 600 at American Shooting Center. I just joined Bayou Rifles which goes to 1000 but work has kept me away from all 3 as of late.
Planning on a 300 yard ladder very soon with my 65x284.
Welcome to the long range game. Used to shoot some in 600 yd F-class in La but just recently moved to Tyler and have yet to locate a place to shoot long or even mid range here. You are likely to have more luck there. PM me if ever over this way.