Goofs

During the beginning of the attack on the prison you can see a string attached to the knife that is thrown at the guard in the tower.

When Joe Don Baker is shot multiple times in the chest before he dies, there is no blood on his shirt.

When Bernie Casey is killed, Joe Don Baker runs over to his body during the gun battle and suddenly all the shooting and fighting stops.

Playing cards in the bar scene where the Seven are gambling with one another have numbers. The playing cards of the Old West did not have the number printed on them, only the symbols.