Technically didn’t Garfield die of infection? They called alexander graham bell in to use his geiger counter to find the bullet in his lower back. They had made several attempts to explore and dig it out.
The geiger counter hit on the metal bed springs and before they could go to plan C garfield died.
Of course legally the shooter was responsible for his death, but if it happened today he would probably still be alive, maybe in a wheel chair.
IITC
Methinks it would be a wise move for you to re-check your alleged "facts":
Geiger counters detect ionizing radiation. They do not react to non-radioactive metals.
Look up "Geiger-Müller tube" to get an explanation of the detection physics involved...
Physical chemist sends...
TXnMA