Wildlands by M. Kenan
Who is Pyotr Tropimovitz Barnov? An expatriate Russian aristocrat, searching for adventure in America's Wild West? A socialist on the run from Tsarist forces? An apostate Jew? A faithful follower of Torah?
And why is Barnov's life inextricably tied to the fate of Gedaliah Kagan, a young Jewish man conscripted into the Tsar's brutal army?
No one knows. All that is certain is that Barnov is an expert marksman, a man of courage who would leap into the flames of a burning railroad car to save something precious, and face down outlaws bent on his destruction.