Continuity mistake: After Joe puts his gun in the basket at the start, he walks over to a slot to put the silver bars in. A CCTV camera is visible duct taped to the wall with a wire attached to the camera. The wire next to the camera goes on for a few inches before there is a bend in the wire going upwards. After Joe says "Two, Jedd" the shot cuts to a close-up of the CCTV camera, and the bit of wire before the bend is shorter than it was before. (00:03:15)
Continuity mistake: When Sara goes to shoot the rock salt at Joe, she cocks the gun and raises it to a 90 degree angle. In the next shot, as she fires, the gun is suddenly lowered slightly. (01:01:15)
Continuity mistake: When Joe is in the diner for the first time in the movie, he is sitting in the corner of the booth. As the waitress says "How's the French?", Joe is now suddenly sitting in the middle of the seat. Then when the shot cuts back to Joe, he is back to being in the corner. (00:02:45)
Continuity mistake: When Abe raises his hammer to break Kid Blue's hand, Kid's hand is shown making a clenched fist. But when the hammer hits Kid, his hand is perfectly flat on the table. (00:54:35)
Continuity mistake: When Joe exchanges the silver bars, his friend is shown entering in the background. The man places his hand in the right hand corner of the basket as he finishes placing the gun. A few seconds later, as Joe retracts his gun from the basket, the man's gun is now placed at the left hand corner. (00:03:25)
Suggested correction: You never actually see the second gun being placed into the basket on the wall so it's easy to surmise that the second one was placed to the left of the first.
Continuity mistake: In the "loop closing" montage, after Joe is shown at the cafe speaking in French to the waitress, he is shown looking at his stopwatch and the time reads 2:29. The following shot shows a tied up man appearing from the future on the white sheet. Joe then shoots the man, but it is noticeable that the angle of the gun and the position of the wound after he is hit do not match up. The gun itself is aimed at the man's head, possibly higher, but the wound itself is shown in his chest. (00:09:10)