This position of the 4th bullet is of interest to allegedly the position of James E. Files..
Dallas policeman Buddy Walthers, who had agreed to testify for DA Jim Garrison in New Orleans, was murdered before he could describe the fourth bullet he found that ruled out Oswald as the lone shooter. The bullet was confiscated by FBI Agent Robert Barrett who, despite having been photographed stealing away the bullet, who not admit it was him in the photograph (A FAREWELL TO JUSTICE, by Joan Mellen, page 300)