I know you mean well. Don't take this badly.
We lack data bases, in fact, I am going to say no one was taking data at the time, of blow ups of cheap 19th century firearms, or even expensive 19th century firearms. Any memory of these events is long forgotten. The Polly Anna affect is real, we look back at the past with rose colored glasses, probably due to innate human optimism. Without which, we would be pretty dour. What we do know, is that when any of these 19th century firearms have a metallurgical analysis, the steels, if they are steel, are inferior to the cheapest steels available today. Inferior in properties to modern steels of identical steel composition. Incidentally, most of those early revolvers were not heat treated. Metallurgy was a developing science in the 1890's, the first phase diagrams were coming out at the time. Iron was purchased on reputation. They did not have the chemical analytical technics we have today. The factories were run by gas light, if that, equipment run off belts, coming off a shaft turned by a steam engine. If that. Process controls were non existent. If the number of sampled defective product did not exceed a threshold, the lot was shipped, even though, sampling had shown, there was defective product in that lot. Because it was an Government entity, documentation is available for WW1 era Springfield Armory. I am aware of a 1917 Watertown report describing just how metallurgic ally poor the steels used in those single heat 1903 receivers. And that rifles were making it out the door, without heat treated receivers. That is a comment on the lack of process controls in the factories of the period. Anyone remember
"Mary had a little lamb, And when she saw it sicken, She shipped it off to Packingtown, And now it’s labeled chicken" ? Springfield Armory did not have an incoming inspection, did not have a metallurgical department to verify the composition and properties of the steels they were receiving, and I believe SA was following industry practice. Metallurgical analysis of the rivets on Titantic is around, and the rivets have a lot of slag and impurties, just as the M1903 receivers. Incidentally, even today, your vendor is busily evaluating whether you are an idiot or not. And if you can't tell the difference between good product and bad, some day, you are going to be surprised about the money you wasted buying crap. Can you say,
Kobe Steel?
https://www.bbc.com/news/business-43298649 Corporations that don't perform their own subcontract surveillance, trust the QA of the vendor, I believe they get what they deserve.
Safety attitudes from the past have changed. Someone dying at work, or being injured, it just happened, and it was their tough luck. Products were defective and it was your tough luck. That was the way it was, people accepted it, and no big fuss was generated if or when a cheap gun blew up in someone's hand. They had a bad Calvinistic attitude at the time, which was, God protected the
Elect from misfortune. So if something bad happened to you, it was proof that you were one of the damned, and you justly deserved what you got! With that being the group attitude, who is going to talk about their misfortune? Want to self identify yourself as a loser?
I don't believe the "safety" of those 19th century guns, even when new, would be tolerated in today's society. I would not recommend firing one, even if it was pristine, because I don't want the blood of someone else on my hands.