A wounded bandit can be seen shooting a Merwin & Hulbert revolver. No replica of that firearm has successfuly been manufactured, indicating that it is likely actually an antique firearm.
Scott Eastwood was not in The Outlaw Josey Wales (1976). That was his brother Kyle. Scott was born ten years after Josey was released.
Scott Eastwood and Adam Beach appeared in Flags of Our Fathers (2006) and Suicide Squad (2016).