Black powder soot goes everywhere and I can see where this soot will settle into the action on modern breechloader where there is all sorts of areas where it can go. That has to be cleaned somehow and at sometime, and other then tearing down the action for a compete clean eventually black powder will attract moisture and then rust if its not cleaned.
I don't gut my percussion Colt revolvers every time but I do throw the frame into a bucket of hot soapy water then blast it with WD-40 to ensure all the moisture is gone. On my muzzleloader shotguns all I did was remove the 2 sidelocks that can be easily removed and throw them into a bucket of hot soapy water then wipe them down and blast them with WD-40. How do you do that with a modern breechloader unless you separate the action from the stock?
A breechloader is an entirely different ball game with its action.
I don't know because I've never shot black powder out of a breechloader before.
