Justice, I have run into the same issue.
Even most outdoor ranges. Most quote city ordinances are the reason, but I don't buy that because I checked. I think they just don't want to degrade their earth berm as fast. Or they say "too much richochet". I don't buy that either, for an outdoor range.
There are two ranges that currently allow FMJ and military Ball ammo, although not SS-109 of course.
Collin County range in Mckinney on Hwy 380:
[url]http://www.ccgunrange.com/[/url]
and Targetmasters on Jupiter which is an indoor range (50 meters) but allows FMJ with rifle, go figure: [url]http://www.targetmasters.com/[/url]
My take: Collin County range is OK but hours suck and they are very crowded on weekends, the benches are not that stable, can't do standing or prone (only benchrest). They are a 100M range) ARs are welcome, double tap is OK)
Targetmasters is so damn dark in their lanes I couldn't even see my sights, good for night vision or pistol. You might do OK with a red dot. The muzzle blast is deafening as it is tightly partitioned off. 50 meters only, Rapid fire OK as long as they are aimed shots, AR15s are welcome.
I usually end up going to GPSR in Garland [url]http://epsr.home.texas.net/gpsr.htm[/url] because they are open and spacious, usually good rangemaster (don't like to get shot by a noob not paying attention) you can do shotgun, rifle and pistol without paying extra and can do standing, kneeling, bench and sometimes prone if there is not a crowd, which there isn't except hunting season when every Tom, Dick and Harry is sighting his scope in. Downside, no FMJ (and they do check your ammo).
I intend to check out Terrell rifle and pistol club sometime [url]http://www.tr-pc.com[/url], they are a 400M range I believe, and and OCMP/DCM host as well.
That's about it for my experience with rifle ranges in DFW area.