I understand where you’re coming from. I’m not a convicted felon, so for me it would be just a choice. I agree that a C&B revolver might not be a good choice for home defense, particularly if one has a wife and/or little ones to be responsible for. If one’s single and alone, that might be a different matter… but, to be clear, I was mainly referring to carrying outside of the home. And, I was mainly referring to its use NOT against a suspect armed with another firearm (in my opinion one shouldn’t be messing with trying to draw on someone who already has the drop on you with a firearm anyway, but that’s another topic). Rather, against a suspect assaulting or attempting to assault with a lethal weapon that would necessitate (and the law would allow) a deadly force response, but that is NOT a firearm. For example, someone swinging a bat, or a club, or a bike lock, or possibly a knife (that’s a controversial subject I know), a brick, a large rock, or any object that could result in grievous bodily injury or death, or even simply using overwhelming physical force by way of numbers— all of these being attacks against which one can legally use deadly force (assuming one has already retreated or attempted to retreat, or not, whatever is required in one’s state). Those would be the kinds of situations against which, in my opinion, using a C&B revolver would be more suitable, perhaps even more so than a modern firearm.
The topic is long and complicated, but I can think of a few advantages a C&B firearm would have over a modern one. Unfortunately, and I know this from having been in law enforcement for years, is that no mater how legally justified one is in use of force, and even if the use of force was unsuccessful, in that both the attacker and yourself are completely unharmed, one thing is somewhere between 50% and 90% likely— one is never going to see that firearm again. It is going to be seized for the investigation and disappear into an evidence locker from which it will never emerge, or if it does emerge, your grandchildren will have had their own grandchildren already by then. I’ve known of cases of folks who had to hire lawyers and jump through all kinds of hoops to have a very personal keepsake returned like their grandfather’s WW2 weapon etc. Bottom line— would you rather lose your $4000 Korth or $2000 Colt Python… or a battered but trusty $150 Pietta clone?
There are other advantages I can think of— you control the power of your firearm, according to how many grains of powder you load it with. Assuming of course, that you don’t overdo it and load your Remington 1858 with like 70 grains (if it could fit), which by any account would be overkill and any prosecutor could argue that. It is very unlikely for there to be overpenetration with a C&B pistol, which might be important in an urban environment. And if you miss, the ball has far less energy than a modern round so will travel far less and is far less likely to penetrate walls and bricks and things, that it might unintentionally strike. And, something that might be very important, depending on where you live, use of an 1850s black powder revolver is far less likely to generate hate for “big scary semi automatic weapons of war” than use of a modern firearm might. In other words, it would be far less likely to lead to anti-2A activism by unfriendly state attorneys and such. It would be more like “That poor sweet old man had to resort to such a weak, primitive weapon to save his life against an attacker… bless his heart.”
There are more advantages I’m sure, and plenty of disadvantages too. Anyway, standard disclaimer— don’t take anything I posted as legal advice, or even tactical advice, and check your local laws and regulations.