When Walker gave the badge to Cage, Cage has a wound on his LEFT shoulder. But the shot before that Cage had a wound on the RIGHT shoulder.
After the shootout, the bandanna/bandage on Weaver's right arm shifts to his left arm in a following scene.
In the barn, Walker fires 7 shots from a six-gun.
Walker and Alex bring their daughter home from the hospital without putting the baby into a car seat.
At the end of the film Ranger Cage has a wound and a bandage on the right shoulder. In the next scene the bandage is on the left shoulder.
At the end Ranger Cage had a wound and a bandage on the right shoulder. In the next scene the bandage is on the left shoulder.
When Walker gave the badge to Cage, Cage had a wound on his left shoulder. But the shot before that Cage had a wound on the right shoulder.
Cage's wound changes position from right to left shoulder.