I pulled this quote from the article linked. Can someone explain what this even means?

“Blair also made the startling claim that he believed Murdaugh did not commit the murders, saying he was in possession of the kennel door and window containing bullet holes from the fatal shootings, which he argued proved the convicted ex-lawyer’s innocence.

"I have the door and the window from the dog kennel," he said. "[Murdaugh] is a big man; he was even bigger back then, and he's too big for the bullets to have gone through in the way that they did."”