Corrected entry: Throughout most of the film, Mattie Ross' gun is correctly shown to be a Colt's Dragoon .44 caliber revolver. However, in the scene where Tom Chaney is looking down at her from the top of the well into which she had fallen, the gun in his hand is a Colt's Model 1860 Army. Presumably, when he, too falls into the well after being shot by Marshall Cogburn, the gun goes with him. When Cogburn retrieves the weapon before helping Mattie out of the pit, the gun is once more a Colt's Dragoon.
Corrected entry: In the scene where John Wayne is getting the girl out of the snake pit, there is a valley behind him and another mountain across the valley. In one shot, on that mountain in the background you can see a car pulling a house-trailer along a road.
Correction: I have watched this scene several times and even watched it in slow motion. I do not see a car pulling a house-trailer anywhere in it.
Corrected entry: In the scene where Rooster is going down inside the well to bring up the girl, he draws and shoots a rattle snake. When he gets to her he is not wearing a gunbelt, and when he gets back to the top, he is wearing it again.
Correction: He does in fact have the gun belt on the WHOLE time if watched close.
Corrected entry: During the last scene in the graveyard, the sky behind John Wayne changes from clear to heavily overcast.
Correction: Not unusual if a storm front is moving through. On the Canadian Prairies, from personal experience, the weather can change from sunny and warm, to cold and overcast in minutes.
Corrected entry: At one point in the movie John Wayne and Glen Campbell ride across the ferry and Kim Darby rides her horse across the river. Upon reaching the other side, Kim approaches the men and has a conversation with them. However, instead of being wet from riding her horse across the river, she is completely dry.
Correction: As Kim Darby walks up to John Wayne and Glen Campbell, her skirt is OBVIOUSLY wet and dripping as is Little Blackie (the horse).
Correction: The pistol used throughout True Grit is a Colt Walker .44, not the later-made Colt Dragoon, and the pistol in the scene of Chaney looking down at Mattie is the same pistol. If you looked closely at the loading lever you should have seen this. Also, he is looking down into a snake den, not a "well."