During the last scene of Django Unchained, when Django and Broomhilda are on their horses, after Django has destroyed everything, we suddenly see a scene where Django and Dr. Schultz are somewhere in the snow. Django is practicing shooting and Shultz tells him "You know what they are going to call you? The Gun of the South." After that Django and Broomhilda take off.
I found it a little unusual. Is there anything that the director wanted to tell through that scene at the end. What was the significance of this scene?