PC Ammo in loot in A20

[Kosmic Kerman]

I notice you didn't say which level you are on day 20, but I would guess pretty high-level since you have lots of end-game gear. For a shooter-experienced player it is easy to speed-run the game, normal players do NOT have a blue machete on day 20. Far from it.

If you only need 15 bullets per POI even when using guns then you must be able to make headshots every single time. "Normal"  players hope to get body shots in and I would estimate use from 3-5 bullets per single zombie (though what is normal in this case? I'm using this word since I couldn't think of a better one).

This is an excellent point. There is also a blue compound crossbow, a purple steel axe, and a green auger. That's not happening through just luck. You have to rush progression to get all of that. I'm on Day 16 or so (60 min days, regular XP gain) and if I had allocated my points differently I could craft a blue machete. I'm at level 3 in all of the agility weapon perks. If I'd allocated my perks differently I probably could have gotten the 5 more points I need to get to level 4 in the knife perk but then I'd be short in other areas that make the game more playable solo.