First off, it's highly illegal. Second off, it's highly dangerous. Blank barrels are a much lower grade of metal than the barrels used in projectile emitting firearms, because they're not designed to have projectiles going through them. Blank revolver cylinders are typically proprietary, and do not have the same dimensions as other revolver cylinders, so you'd have a hard time finding one which aligned properly, as well.
If it's a modern revolver, you activate the cylinder release, open the cylinder, and push the ejector rod.
Nice revolver
Revolvers hold cartridges in a cylinder. When the revolver is operated, the cylinder turns (revolves) to align a cartridge with the barrel. Originally called a Revolving Pistol, shortened to revolver.
cylinder stop drag
holster
Well, a revolver is a type of pistol (although revolving rifles have been made) which used a rotating cylinder to hold the ammuniton, and a firearm is considered loaded when there is live ammunition in the chamber and/or feeding device (such as a magazine or cylinder), so a loaded revolver would simply be a revolver which had live rounds in the cylinder, and was ready to be fired.
A revolver is a type of pistol that the cartridges are in a chamber in a cylinder. The cylinder revolves in the gun (hence 'revolver') bringing each successive chamber in alignment with the barrel. A revolver could have five chambers, it could have ten. The most common would be five or six.
The cylinder lock and cylidner rod.
cylinder
Frame, barrel and cylinder
Best left to a gunsmith.
The difference is that a pistol has a magazine and a revolver has a rotating cylinder that has individual chambers to shoot