quadraginta
Becoming Beth
At the extreme close range of the last shot, the shot shell wad is just starting to open and the pellets of any size are still in a tiny group. There was a stain on Arbery's shirt side/back as he fell. I think buckshot or bird shot was used and it completely penetrated the side of his abdomen.
You're an authority on firearms whose expert opinion I respect.
But, having said that, there's a big difference between buck shot and bird shot. Even at close range would the wound be almost the same?