Nitro in a BP revolver.

[harrysmith]

Are you sure? What about Westlake and Anvil conversions?

they are still muzzle loaders where as the bp conversion is actual cf brass cases in cylinder

Ah ok. When the 209 shotgun primers were mentioned it confused me as this is what the aforementioned conversions use.

Ps You could have your 1858 converted to nitro