Thomas McGuane, the acclaimed author of “The Sporting Club,” thinks fiction set in the American West could stand to lose some of its ranching clichés. The novelist, a consummate outdoorsman and devoted fisherman, met up with the writer Callan Wink, who recently published his first book of stories and works as a fishing guide on the Yellowstone River.  McGuane and Wink discussed the state of the short story and the late author Jim Harrison, a mutual friend, all while sitting in a fifteen-foot drift boat. And, yes, they caught a few fish, too.