Mark Hamptons books as mentioned, Larry Weisuhn has one, JD Jones and Larry Kelly's book is a classic. Larry has stories from lots of hunts with sixguns and single shots in his. Mark has a lot of stories and just plain good info on single shots and sixguns, JD and Larry's book is primarily single shots but has stories and such from writers like Mark to aid along the way. Good book. Mine is tattered after many many reads over the years.
Here are the ones that have been mentioned and the ISBN numbers if that helps..