In the new version of True Grit, they didn’t talk like all the old cowboys movies. I thought that was interesting and probably more correct than all that ain’t and won’t and everyone having a southern drawl stuff.
The English spoken in “Deadwood,” loquacious and erudite, is almost Shakespearean. Executive Producer David Milch (the former English Lit lecturer at Yale who created NYPD Blue} did a lot of research on the matter and said the profanity is dense but more like the actual language used than what westerns sited in North Dakota produce.