Pirate Weapon/Armor/Bullet drop list

Went through 7 levels at wild boars and only 1 lvl 30 bullet dropped. -_- I guess the drop rates are the same as the thief's throwing stars.

 Spoiler

I found two of them within one level there. They were found 10 minutes between each other, although I haven't found anymore since. They don't seem two rare, unless I was just lucky.