I'm trying to complete the "Shooting Gallery" side mission but each time I fail, the game reloads at my last save point away from the Whitetail Ranger Station. When I attempt to fast travel there, it's greyed out, stating that "Fast Travel is Unavailable". In addition, I can't manually save at the station. The option isn't available in the menu for some reason. I've already killed Jacob and would like to complete the side missions. Is this a bug with this particular mission?