The difference between a rifled barrel and a smoothbore is the same difference as a spiral pass, and a knuckleball.
A football thrown in a spiral is very accurate, a good quarterback can hit a racing received very accurately. In contrast, a ball bouncing down a smoothbore barrel and coming out anywhich way is relatively unpredictable.
My chambers and barrel are the least of my troubles.
My Uberti 1847 Walker Colt likes to foul up around the arbor and against the face (forcing cone) of the barrel. After two reloads, it becomes very difficult to even rotate the cylinder. This, unfortunately, requires disassembly to clean.
Also disagree with the bullet lube. I always lube the bullets or the patches if I'm going roundball and I use a good quality black powder lube. Less fouling between shots, longer time between barrel cleanings. I use pure beeswax to lube the .635 balls for my Ferguson and Maxi-Lube on the lower 1/3rd of the breech screw and I have no fouling to speak of after 40 shots in a row.
I really got some chuckle out of the bit at the end of the article about reloading a cap and ball revolver while being chased by Indians. I have a replica 1859 44 cal Remington Army Model. The only way that could be reloaded on the fly would have been either with combustible cartridges or by changing cylinders. Then there would have been the problems of sealing the chambers and attaching the caps to the nipples. Nowadays, without the old combustible cartridges, it’s a lot harder with loose powder and balls. My solution is to have several pre-loaded cylinders that I don’t prime until just before I’m ready to shoot. That brings up another point: changing cylinders is a very persnickety job that’s harder than changing magazines in a modern semi-auto. Being chased by “Native Americans” while on horseback it would have been a real challenge.