Howdy Pard!!
The only other film that comes to mind is an old 1950's film titled The Fastest Gun In The West. Starring Glenn Ford, Jean Peters and Broderick Crawford with John Dehner and Leif Erickson as co-stars. But it's not about a Pastor, but a storekeeper, who is the son of a former lawman and wants everyone to know it, but his wife tries to keep it a secret. The talk finally gets out in the town he's living in and a gunfighter(Broderick Crawford), who thinks he's the fastest challenges him to a gunfight.
Ed