Verify that the nipple has a clear path for the flame to get to the powder, that the powder is not contaminated with oil or water, and that the percussion caps are good.
Try clearing the bore (pulling the ball and dumping out the powder) and swab the bore well. Clean out all oil with dry patches. Run a patch down the bore. Put a cap on the nipple and fire it. If the cap will fire and shoot the patch out, you know that the cap and nipple is good.
Yes
A traditional inline muzzleloader can be equipped with a mechanical safety. This safety feature helps prevent accidental discharge of the firearm by blocking the firing mechanism until the shooter is ready to fire.
They are called muzzleloaders simply because the powder and bullet are loaded from the muzzle end of the gun, Here is a page from WIKIpedia that may help answer.http://en.wikipedia.org/wiki/Muzzleloader
No
Cabella's
That depends on the make and model.
Unknown
100-400
2
removing the breech plug
rust
One can purchase a CVA muzzleloader from the official website of CVA. These hunting equipment costs between 100-600 dollars and comes in numerous specifications.