Watched this last night and enjoyed it a good bit. Much better than Civirani's Son of Django. Agreed about the ending, but this is actually a problem I have with most all films I've ever seen..
Easily satisfies the spaghetti appetite with the nice pacing and some unique moments, but still doesn't go beyond the lesser entries in the genre. That's fine with me though and will sit at the top of these types of spaghet.
Shame the video quality is so poor on the release I have, which I assume is the only one available. Still have seen much worse, but would be nice to have Golden Sheriff on a proper print.