Yes it is concealed, but not illegal because black powder firearms are not considered a "firearm".
Chances are that if you overload the charge in a revolver style black powder pistol, you can blow up the cylinder or blow the barrel off the end of the gun.
22-72
The BATFE website has the answer.
You need to consult a Black Powder loading manual
In the technical sense no it is not loaded via the muzzle of the gun, black powder revolver is accurate as terms go, but they do fall under the blanket of "muzzle loader" in general terms.
There are none produced that I know of, a 209 primer would be over kill in a revolver due to the small chamber and lower amounts of powder.
black power or cartridge rounds? Colt made the first "practical" revolver, so this was the first commercially successful cartridge revolver. I can't say about black powder... but you should read this: http://en.wikipedia.org/wiki/Revolver <><><> The first Colt revolvers were black powder handguns. The self contained cartridge was invented later.
Most recommend is 3F powder, either true black powder or the "synthetic" or black powder substitute equivalent and between 25 and 30 grains should due nicely.
I wouldn't try that. Get a permit.
Yes , but FFFG is recommended because it burns better in small cal. firearms.
not likely anyone keeps data on re-pro black powder pistols................
Seek the services of a gun smith.