This is actually from a 2023 article from the Daily Mail entitled: "Secret Service agent who was with JFK on day of his assassination breaks silence with claim that blows up the 'magic bullet' theory and suggests there WAS more than one shooter." Paul Landis, "who in 1963 was a young Secret Service agent assigned to protect First Lady Jaqueline Kennedy, said that in the chaos following the shooting, he picked up a nearly pristine bullet sitting on the top of the back seat of the open limousine."
It was just behind where Kennedy was sitting when he was killed, he says. Landis says he took the projectile and placed it on the president's hospital stretcher to preserve it for the autopsy investigators.
That bullet, the first piece of evidence logged in the murder investigation, has for six decades been said to have been found on the stretcher of Texas Governor John Connally, and was hypothesized to have fallen free from a wound to his thigh.
Landis thinks the bullet may have rolled onto Connally's stretcher from Kennedy's while they were next to each other.
It has long been known as the 'magic bullet' -- the bullet that supposedly passed through Kennedy's neck from the rear, then entered Connally's right shoulder, struck his rib, exited under his right nipple, passed through his right wrist and hit his left thigh.
But Landis' assertion that it had actually exited Kennedy in his Cadillac could lay waste to the magic bullet theory - and bolster the claim that Lee Harvey Oswald did not operate alone on the day of the murder.
[snip]
The bullet, which had been fired but was nearly fully intact, was positively matched to Oswald's Mannlicher-Carcano through ballistics analysis.
But if Landis' claim is true, that suggests the bullet tagged as FBI evidence item 'C1' was not responsible for the injuries to Connolly, and there was no so-called 'magic bullet'.
The article goes on to explain that there wasn't enough time for Oswald to get off four shots from his rifle in the time he had, so if there was a fourth bullet, as Landis is saying, there must necessarily have been another shooter--someone that shot Connolly.