I have bad news & semi-bad news for you. My C6.45LDA would only feed Cor-Bon and FMJ rounds even after a trip to the factory. The factory advised against using Cor-Bon regularily because it pounds the gun too much and FMJ rounds are not my first choice for self defense. So, in my experience, the C6.45LDA, while it looks good on paper, is not a good choice for self defense.
I have no actually experience with the 24x7 so it may very well be a good gun but past expereinces with other Taurus autoloaders have been less than favorable. Their revolvers, on the other hand, have been pretty good.