If you don't believe me go watch Paul Harrels video on cap and ball for self defense. He has a good test medium shirt ribs then oranges to simulate lung tissue more ribs and a hight tec fleece bullet stop. Watch that and tell me you think that's iffy
You don't get the point, literally. If that is all you have, then its the best you can do with the tech of the time.
So what you are doing with what is available, is trying both arms behind your back and saying, but it works! I have proof. All you need is the dead and wounded from the Civil War for that. You think those guys would not trade for a modern 38 special in a mili second (the time it takes to process the offer).
Give a rifleman a 30-40 Kraig and he would thought he had died and gone to rifleman heaven.
The reality is a long loaded BP gun may or may not fire, powder or cap. And if it does you can have a cap jam and in that time it could well be over.
A guy wrote in that he had two extra cylinders for a Cartridge Conversion ROA as backup. Lets see, fire 6 shots, get your tool, open the latch, pull the pin and rammer, fumble around and loose the parts...... The smart thing was using a cartridge conversion and the 6 reliable shots that gave him (a stray cap does not jam the gun). So the spare cylinders are totally useless (well I guess an extended shoot out behind cover that the other guy or guys don't know you are changing cylinders).
Pistols are tools of last resort. The only effective use of them ever was the Calvary and if it was in a close in melee they were the best they had for the job. Yes a pistol may be the only real option as its awkward and public to carry a rifle or a carbine around.
Now did I do non smart things when I was young? Oh yea. Some of em I was lucky to survive and some of them could have cost me major bucks (skinned by on loosing my 4 x 4 twice). But as my Mom says, you may not get smarter as you get older but if you pay attention, you acquire wisdom. Passing that on. And no trying to loose my Bronco the first time did not sink it, the second one sure did.
Sure you can do what you want, that does not mean its got any merit and you don't need to justify it. I can do what I want is good enough.