I was wondering about this as well. Are there any other modifiers to loot other than the spawn chances we see in the loot chartst? Because when i raided some town with a group the general store was full of ammo, and the hospital overflowing with blood bags, but when i died and went there on my own a few hours later ALL of the buildings/deer stands i encountered on the way had mostly tin cans, and the hospital had like a few epi pens and morphine, only one crate and even that was filled with tin cans.