Incorrectly regarded as goofs

In every episode each character who wore a gun had a pistol belt with no loops for bullets. The show took place during the Civil War. Pistols were cap and ball, did not use metallic cartridges. Thus no bullet loops.

Actually, even though the belts had no loops, the pistols they carried were definitely metallic cartridge weapons. Ben carried a Remington Model 1875 Army revolver, and Adam, Hoss, and Little Joe all carried Colt Model 1873 Single Action Army revolvers. They can all be seen reloading cartridges into their weapons in numerous episodes.

Anachronisms

During the first season opening credits, the Cartwrights can be seen galloping on horses on a dirt road that contains an unmistakable set of tire tracks from the truck carrying the camera in front of them.

Anachronisms

The story of Bonanza starts in 1859 Nevada but the clothing worn by the cast is invariably 20th century . For example belt loops did not appear on men's trousers and jeans until many decades later.

Anachronisms

Floor model wheel slot machine in saloon was not built until 1896.

Factual errors

Floor model wheel slot machine in saloon was not built until 1896.