TexasCHLforum.com

There is no caliber restriction as far as what you can carry under your CHL. There IS a minimum caliber as far as what you can use to qualify. In other words you can't take the test with a .22, but once you get your plastic you're legal to carry one.

As far as minimum caliber you should carry, I tend to stick to the old add age about carrying the largest handgun in the largest caliber you ae willing and able to carry concealed and that you can handle".

I could argue for days that a .22 is somewhere between a suboptimal and a downright bad choice. In the end, however, it's their choice to make. Also, there is one even worse choice, to leave the gun at home where it does no good at all.