The McIntire brothers (Christ Chittell and John Fordyce) are plucky lads but tend to end up in compromising positions despite the Ace of Hearts' (Gianni Garko) efforts to cover for them.
The film follows the McIntires' quest to learn the identity of the head extortionist, with Ace as their muscle. But the gang has their own hired gun known simply as The Duke (William Berger). "Acey" and "Dukey" know each other quite well and share a mutual professional respect that borders on real affection. In subtle ways they manipulate events so each can get a bigger payday, but both are reluctant to be forced into a potentially fatal showdown -- until there's a $100,000 payday at stake.
Gli fumavano le Colt...lo chiamavano Camposanto is an unpretentious western with generally decent dubbing, though the sound mix on the VideoAsia DVD in the Spaghetti Western Bible Vol. 3 set is a little muddy. Carnimeo's direction is effective but not as flashy as his Sartana films, and some of the comedy is overdone, particularly an overlong barroom brawl scene. Bruno Nicolai throws in a whistling theme tune and adds some mildly melancholy notes later on. There's nothing really special or spectacular about this movie apart from two spaghetti stalwarts, Garko and Berger, doing some of their best acting in the genre. If Ace and Duke had ever crossed paths again, I wouldn't have complained at all.
Here's an Italian trailer uploaded to YouTube by MrSpaghettiWestern: