True.
On the other hand, finding out that the factory specified beveling the chambers to eliminate chain fires is a biggie. I haven't seen any chamfered edges on any of mine.
Some of these smithing actions may seem unnecessary and over-and-above originals, but how much do we really know? How many of us knew about the chamfered chambers? This kind of reminds me of the older Moto Guzzi bikes I love. It was discovered that the timing marks weren't always correctly stamped. So it's a good idea to verify they're correctly marked. Making a comparison here between open-tops and Guzzis, detractors would tell us to just ride the dam thing as it came from the factory! However, just because it left the factory like that doesn't mean it was what the engineers who designed the thing intended. Some things are done to a price-point and a wide tolerance is considered good enough. Sometimes there are mistakes, and even though it works, it doesn't work well or as it should.
I am curious if chamfered cylinders became a bad idea when cartridges appeared, and for the reason M.De Land pointed out? Maybe this was only a good idea for BP revolvers? It certainly wouldn't be needed in cartridge guns.
And, finally, were these guns the ultimate best they could be? Most likely not, and on the most part, would you really want to change it from the gun it was in 1847? Me, I'd like it to hold up and to shoot the loads it was designed for, and that's what this thread is all about. Detractors say "Leave well enough alone!" But that doesn't work because running full loads without any adjustments or modifications rattles them apart. Maybe originals could stand up to the wear and tear? (except for the weak cylinders blowing up). So already we've veered from the original production using modern steel.
If you don't mind turn lines, hammered and peened cylinder stop notches, wedges that won't stay in or replacing them every few sessions, etc, then go ahead and leave your new Walker as is. Or run wimpy loads that won't stress the weaknesses in the build. I don't consider that functional and prefer things holding together and just working.