How much is a Sears Roebuck model 281517760 Zouave 58 Calibre Muzzle Loader worth and what year was it made?
Not knowing exactly who manufactured the gun, I can't say for certain, but a Navy Arms reproduction Zouave lists from $100 to $400, depending on condition.
not sure if this is what you are looking for but a musket is usually smooth bored meaning it has no rifling in the barrel where a muzzle loader can have rifling. A muzzle loader refers to any weapon that is loaded thru the muzzle in a simple definition and it can be either smooth bored like a musket or rifled like a Pennsylvania long rifle or like most modern muzzle loaders are today
Why is it important to ensure your muzzle loader can handle modern smokeless powder as a propellant?
Your question answers itself, "muzzle loader". You load it from the muzzle. Actually, that's incorrect. They use the term "muzzle loader" improperly. It's a bolt action black powder rifle. The powder is pre-pressed into slugs that you load into the chamber, along with wadding and a bullet. I would guess you could load it down the muzzle, but it's faster and easier to buy the slugs and load that way.
Muzzle loading guns must be loaded in parts though the end of the barrel. The method of igniting the gunpowder in a muzzle loader is different than modern guns in that it uses a primer cap or pan instead of hitting primer inside of a bullet shell. Muzzle loaders are neither center fire nor rim fire.