Comment by Magic Marmalade:
This was a great, fun pastiche / satire of the western tropes of the times, with the hapless, bungling Gary Cooper spoofing the traditional "tall dark stranger / hard-bitten / super-tough / man of few words" type...
...Can't handle a gun for toffee, bit of buffoon, but with a good heart, who gets mixed up in the affairs of a tough outlaw, and mistaken for him, which he tries to use to his advantage, and probably wishes he hadn't... luckily, he's got his ald friend at hand to help him out various fixes, and beautiful prospective love interest / femme fatale who is entirely in control of the whole situation, being smarter than the lot of them! :)
Really enjoyed this western prototype of a kind of Forrest Gump kind of movie.