700yds,
Shooting instruction in Texas shouldn't be an issue. Including myself, there are 4 former Unit Operators that live here and do open training. There are also a number of former SWAT, Marines, SF andNational Level shooting champions doing instruction. Elm Fork isn't bad if you're in the Dallas area. I know their lead instructor, who I've been working with to get more tactical training at their range. I'd expect that they will have regular Tactical Rifle courses at Elm Fork this Fall/Winter. In the meantime, Tiger Valley comes up to Elm Fork a couple times a month to put on rifle courses. Now, I'm assuming by your post that Waco is a little far, and I'm also assuming that like me, you're in the Dallas area. If that's true, I'll suggest TDSA out in Ferris, Texas. Its not quite as far as Waco, but they do have a good amount of ranges suited for tactical training. Alternatively, if you have the budget and the gas tank, Rough Creek Lodge has an excellent tactical range that was designed by Craft. Great way to make household 6 happy if she isn't a shooter, because you can drop her off for a spa day while you train and then join her for a nice lunch or dinner afterwards.
Hope that helps, feel free to drop me a PM if you need any other info about the area.