Now you don't see it...
"We switched the dental records on the way out of the bunker, prior to the final breakout."
Hitler's Personal Dentist
...and now you do.
James Brady was NOT shot with a .38 - his whole skull would be in pieces.
Certainly if it was loaded with illegal "devastator" bullets which explode when they hit things
He was shot with a .22 - a pop-gun by comparison.
Here we see James Brady and James Brady's head injury, right next to the gun that didn't cause them, along with the Secret Service agent that just put it there...
The DC policeman with the long coat is the one who picked up the .22 and took it away from Hinkley.