THIS POST HAS BEEN CORRECTED FROM THE ORIGINAL. Thanks to Hammer.
Someone Googled "what is minimum caliber for concealed carry texas."
It depends. You must use at least a .32 caliber to qualify, but you can carry anything you want.
Which means you can qualify with a wimpy .32 ACP, but not the much more powerful 7.62x25mm Tokarev, because 7.62mm is only .30 caliber. Not logical, but since when do governmental restrictions operate by logic?
But after you qualify with your P-32, you can carry whatever.
By the way another restriction is that if you want to carry a semi-auto, you must qualify with a semi-auto. If you qualify with a revolver, you can't carry a semi-auto.
You can download a pdf of the current CHL laws at the DPS website.