Hello, I am new to the forum and I will be new to the firearm community in a week. Once I have my own firearm I will be getting my CHL within a short period of time. I am wondering if there are any calibers that can be used for both rifles and handguns outside of .22LR?? I will be going to my second gunshow this weekend in Mesquite, TX. and I am going to be purchasing my first firearm. I am thinking a XD 9mm Sub compact would fit my needs. But I know that I would have to get a larger caliber handgun or rent one to pass the CHL exam. And I would pass on getting the XD 9mm for something that takes a caliber that can be used in both handguns and rifles. But, I am also interested if there are any round calibers larger than the .22LR that can be fired from both a handgun and a rifle? An AR rifle would be more specific for what I'm interested in but I don't want to limit the possibilities. Any help would be greatly appreciated by this rookie!