You might want to have a conversation with Isaac Newton.
So AB, what would Newton have to say? I say the perp would be knocked back away. Only the Warren Commission seems to think a round hitting from behind causes the recieving party to move toward the shooter.
You obviously think catching a brick at a couple of hundred feet per second wouldn’t include you in the brick’s momentum?
Your assumption must have the 45 ACPs passing on through and not transferring their energy onto the mass, othewrwise just wanting to be argumentive.