I love Justified. I think I'm actually starting to feel sorry for Dewey Crow.
The shotgun blast in the last episode was a bit much. People do sometimes get "thrown" from a gunshot. Backwards mostly, when it happens, but sometimes forward or in a random direction. Its not the energy of the bullet moving them its their own body's muscular "twitch/spasm" due, I'm told to a "short circuit" in the nervous system. It's supposedly very rare, but it apparently has been witnessed. NOT like TV/movies, flying a dozen feet though the air.
Generaly I think the gun use is pretty good, it is, after all a fictional drama, so I allow some leeway. I like the fact that sometimes things don't do what Hollywood always has them do, though sometimes they are the standard cliché.
Bet that one bad guy gets to try his 21 foot rule against Raylan, before the season ends. I'll put my money on the marshall.