Forum:Harry's protection charm

I was re-reading the books and I when reading Dumbledore's explanation when Harry "dies" I thought about something and I would like your opinions.

When Lily died to protect Harry, she created a protection for him, that's why when Voldemort casted the killing curse on Harry, it rebounded and nearly destroyed Voldemort.

The charm was supposed to last until Harry turned 17, as long as he lived with the Dursleys.

Now, in the Goblet of Fire, when Harry faced Voldemort in the graveyard, Voldemort once again tries to kill Harry using the killing curse, but Harry casted a spell towards Voldemort and both spells met in the air.

The reason was that the wands shared a common core and because of that, the killing curse never touched Harry.

However, what if it did? Harry was 14 and still called the Dursley's home his home, so the protection charm was still active.

If the killing curse had touched Harry, wouldn't it have destroyed Voldemort as it did when Harry was a baby?