Nitro cylinders?

[Roodles]

Hello!

I don't know much about BP pistols, other than they take longer to load and clean than to shoot

I heard someone say that they use bullseye with a nitro cylinder What does this mean? And as its using smokless powder, I assume normal firearm cleaning procedures are used

Can someone please enlighten me about this, as it seems to make the whole muzzle loading revolvers slightly more attractive

- Roodles