I'm not sure about the regulations in Texas, but here in Georgia, "only handguns producing 500ft lbs of energy at 100 yards, may be used"... Maybe you reloaders can achieve that with the .45acp, I'm not sure. But I'd be willing to buy about 20 rounds if you could for the ol' Lightweight Commander.
It's also illegal to shoot deer with a .22lr, but many and I mean
many have been taken with it...
Just a thought....