It goes by fast, but at the funeral, Harry supposedly picks up a spend shell from the gun salute. When he gets to his house, he drops a fully loaded cartridge, complete with bullet, into the jar, along with several other cartridges. Fired cartridges will not have bullets.
Official LAPD funeral with full honor guard, 21 gun salute, dual pipers. Taps played incorrectly; most common amateur mistake: middle nine notes should not be dotted rhythm.
When Harry enters Chief Irvin's hotel room, the safety bar is extended, keeping the door from latching. Harry enters, does not swing the bar back, but you hear the door latch behind him when the door closes.