Bullets change trajectory when they hit things. Even if it just goes through soft tissue it's not going to continue in a solid straight line from the moment it's fired.
Although I'm willing to entertain any number of conspiracies, the single bullet theory has already been pretty well substantiated through actual re-creation.
I teamed up with zombie Oscar Wilde to shoot JFK, but stood patiently in line with the Mob, the Illuminati, Dr. Evil, the lizard-people and the Moon only to find that the CIA had replaced him with an exploding clone.
Magic bullet is bull to the third power.
"I don't like conspiracy theories all that much..." Then why stumble with the Conspiracies tag?
Another addition to my collection of jfk files.
The magic bullett has alwasy fascinated me!