Only one? I would pack my SBH 5-1/2 inch .44, and to hell with hiding it. Just live where I don’t need to. Whatever put me down to one pistol pribably did away with much concern about CC anyway. I can hit a clay bird on the 100 yard berm reliably with it, and once you learn how to run a single action, there are damn few things six rounds of .44 won’t solve in close. If I had to go to just one, that one would work just fine, and most importantly, always work, and keep working. No magazine to lose, brass management is easy, and wheelweights become bullets quite easily. Worst case, cast bullets and black powder could do the job just fine.