In Porco Rosso, why does he inspect every round?


In Porco Rosso, Porco can be seen inspecting every round that he just
purchased. He discards some and keeps others.

[![enter image description
here](https://i.stack.imgur.com/7e7tk.gif)](https://i.stack.imgur.com/7e7tk.gif)

I would assume these are left over from WW1, and as a result they are a bit
old and potentially no longer good. Perhaps he is checking to see if the
bullet is pushed in, if there's any cracks or rust, perhaps they are just low
quality.




He is likely checking ammunition for oil or grease. Oil or grease on the
cartridges can produce excessive chamber pressure leading to personal injury
or death and/or damage to parts of the gun.

