Please read the Description:
these are the chances how often I found each of 5 possible Cargos at a sample size of 16 Containers:
-7x guns = 43,75%
-3x items for ammo crafting = 18,75%
-3x puppets = 18,75%
-2x clothing = 12,5%
-1x ammo and food = 6.25%