Raylan Givens uses a Glock 17 chambered in 9×19mm, not a .45 as he incorrectly states.
When Raylan visits Boyd in the forest, the viewer sees gnarled Lodgepole Pine trees, which are not found in Kentucky or anywhere else in the United States except California (where it was filmed).
When police respond the judge's car accident, the police car the viewer sees has "Lexington Police" on the side. However, Harlan--the location of the story--is 100 miles from Lexington.
When Raylan rescues the judge, the viewer see Deodar cedar pine trees lining the residential road. These trees are not found anywhere in Kentucky since they are restricted to hardiness zone 7-11 whereas Kentucky's hardiness zone is 6. Filmed in southern California.