Do you know that GZ wasn't "on patrol" for his nonexistent Neighborhood Watch,

[GreenStormCloud]

43. He chamber a round when he loaded the gun at home.

And then he tok out the magazine and topped it off to full capacity of 7 rounds..

He could not have chambered it in his truck. That pistol holds 7 in the magazine, 1 in the chamber. That's 7+1. Firing one round then caused the pistol to eject the empty brass and automatically load a new round in the chamber, leaving 6 in the magazine. He was now 6+1. When the police took his pistol it was found to be loaded 6+1.

If he had loaded a round in the chamber while in his car he would have started at 7+0, then gone to 6+1, fired one round and been at 5+1. Since he was at 6+1, then he left home with a fully loaded gun.