Barquero has really no excuse for not living up to its full potential. The inspired casting choice of piting genre stalwarts Lee Van Cleef and Warren Oates in opposite sides of the river against each other and the idea behind the film a group of ragtag cut-throats led by Oates transporting rifles and silver after a successful raid at a nearby town to the Sonoran territory in Mexico and desperately in need to cross the river before the army gets them while Lee Van Cleef as the boatman holds the barq at the other bank and refuses to pick them up. That should have been enough to keep Barquero afloat and my terrible puns at bay (ahem).
What really keeps the film down is the unpolished, roughly sketched script. The first and closing acts sustain interest through lengthy bouts of gunfighting but some kind of semi-compelling plot needs to be assembled for the middle act where sadly Barquero fails to kick the conflict into high gear, a hard feat to accomplish with a story that seems to invite conflict and could have gone into so many different places. Instead what we get by the end of act two is the good guys outwitting the bad and saving the hostage Warren Oates was keeping tied up and Oates half mad and desperate (as the army draws closer with every passing moment) shooting holes at the water and saying to his henchman "I shot the river". Not particularly endearing, don't you think? Forrest Tucker steals scenes in the role of ant-eating Mountain Phil while Van Cleef and Oates seem to be representing two different western archetypes Van Cleef the romantic hero eclipsed by the coming modernization of the west, represented in the movie by a bunch of squatters he's called to protect, Oates the rough-hewn, murderous son of a bitch, the gritty and hardboiled aspect of the western, pioneered at the time by spaghetti westerns of whose villains he's somewhat reminiscent of.
Definitely better seventies westerns to keep the genre aficionado occupied out there but it's worth a watch for its marquee value, Van Cleef and Oates a dream match made in heaven and both in pretty good shape.