system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] How do you get avada kedavra-d?

I get that you die when it hits you but when the spell hits the ground right beside you you don't die. Yet you die when it hits you in the chest with several layers of clothes. Will I die if it hits my hair? My purse? What if I have like 20 layers of clothes or an armor? If I use something like a book as a shield I won't die so why doesn't it work the same with clothes, they too can be seen as a shield for your body?
gpt
The killing curse appears hold at least a minimal amount of bleed through.

Based on what we've seen the best comparison is probably a low caliber bullet. Enough power to punch through clothing, not enough to punch through stone.

Based on the fact that no one seems to consider wearing some kind of body armor it seems likely that the bleed through is significant. It very well may work like an electric shock, transfers very easily but loses power rapidly when conducting through material.