Project Zomboid Ammo Crafting: Build 42 Vanilla Limits and Mods

Project Zomboid Build 42.19 · Ammocraft & Ammo Maker

Quick answer Unmodded Build 42.19 does not manufacture new firearm ammunition. Vanilla lets you open ammo boxes, put loose rounds back into boxes, and destroy a loose round with pliers or vise grips to recover one use of gunpowder. To cast bullets, reuse casings, or make complete rounds from raw materials, install a Build 42 ammo mod.

Vanilla net ammo gain None

Build 42 choices Ammocraft or Ammo Maker

Brita patch status Build 41 only; avoid on Build 42

What vanilla Build 42 actually allows

In unmodded Build 42.19, ammunition actions cover packaging and dismantling, not a production chain. Opening or re-boxing ammo changes only its container, while gathering gunpowder consumes an existing round.

Action	Input	Output	What it means
Open ammo boxes	One matching ammo box	50 handgun rounds, 20 rifle or .44 rounds, or 25 shotgun shells	This only unpacks ammunition that already exists.
Put ammo in a box	50 supported handgun rounds, 20 supported rifle or .44 rounds, or 25 shotgun shells	One matching box	This is storage and inventory organization, not crafting new rounds.
Gather Gunpowder	One loose ammo item plus pliers or vise grips; the tool is kept	One use of gunpowder	The ammo input is destroyed, so this reduces your usable ammunition.

Old recipe lists can be misleading Some older pages and translations still mention bullet molds or “Make Shotgun Shells,” but those production recipes are not available in unmodded Build 42.19.

Choose a Build 42 ammo mod

Ammocraft

Build 42 Updated Apr. 1, 2026

A reloading-focused option. Each round needs a bullet tip, a casing of the matching caliber, caliber-dependent gunpowder, and a reloader press.

Workshop ID: 2245813444
Mod IDs: ammocraft and ammocraftfirearms
Features: bullet casting, spent-casing reuse, gunpowder jars, recipe literature, and a reloader press
Gun-mod note: Firearms is listed as compatible
Existing saves / multiplayer: not clearly promised for existing worlds or multiplayer

Ammo Maker

Build 42 Updated Jul. 16, 2026

The broader from-scratch option. Build 42 support covers 59 calibers and a progression from raw materials through bullets, casings, gunpowder grains, and bulk reloading.

Workshop ID: 2788256295
Mod ID: ammomaker
Gunpowder: made from nitre, sulfur, and charcoal powder
Components: cast bullets, recycled brass, forged casings, sand molds, and reloading presses
Existing saves: can be added to existing worlds
Multiplayer: multiplayer support is not clearly promised

Which one should you use?

Need	Better starting point	Reason
A direct reloading loop with tips, matching casings, powder, and a press	Ammocraft	That round-assembly loop is the core of the mod.
A longer production chain beginning with natural or recycled raw materials	Ammo Maker	It includes gunpowder production, brass recycling, casting, forging, and bulk loading.
Adding ammo crafting to an existing world	Ammo Maker	It can be added to existing worlds.
Using the Firearms gun mod	Either, after checking modules	Both mention Firearms compatibility; Ammocraft also exposes the `ammocraftfirearms` Mod ID.
Using Brita’s Weapon Pack on Build 42	Neither old patch is safe	The former Ammo Maker patch is Build 41 only and marked “Probably Does Nothing”; Brita/Arsenal is not on Ammo Maker’s Build 42 gun-mod list.

Ammo Maker’s Build 42 gun-mod list includes Firearms, Guns of 93 Test Build, Guns of Marz, Real Firearms, Totally’s NATO and Commonwealth Firearms, Totally’s Eastern Bloc Firearms, Totally’s American Firearms, Totally’s Historical Firearms, and VFExpansion Redux B42.

Install without breaking your save

Confirm your game branch Use a Workshop item that explicitly carries a Build 42 tag. Build 41 and older mods must be updated before normal use in Build 42.
Subscribe to one primary ammo system Start with Ammocraft or Ammo Maker, not both. Add another overhaul only when its authors document compatibility.
Let Steam finish the download Restart Project Zomboid after subscribing so the Workshop files load correctly.
Enable the correct Mod ID Use ammomaker for Ammo Maker. Ammocraft exposes ammocraft plus ammocraftfirearms; only enable the Firearms-specific module when you use that gun mod.
Attach the mod to the save For an existing world, enable the mod in that save’s own mod list before loading it. Back up the save before adding or removing a crafting overhaul.
Match multiplayer settings The server must download the Workshop item and enable the matching Mod ID, and every client must use the same active set before joining.

How the crafting loops work

Ammocraft

Obtain or recover a casing that matches the caliber you want to load.
Obtain a matching bullet tip and the required amount of gunpowder.
Use the reloader press to assemble the round.
Use casting and primer-reloading when you need new bullets or want to reuse spent casings.

Ammo Maker

Produce gunpowder from nitre, sulfur, and charcoal powder, or convert supported base-game gunpowder into grains.
Recover casings from supported firearms or find component loot; old casings can be refurbished.
Cast bullets with a base-game furnace and reusable sand mold.
Recycle brass, forge brass sheet, and form casings with the supported forge tier.
Combine the active caliber’s bullet, casing, and gunpowder grains; use a reloading press for bulk production.

Use the in-game recipe panel for exact quantities and skill gates Exact amounts, learned-recipe requirements, and supported calibers are shown in game and can change when the mod updates.

Do not install these old entries on Build 42

[Probably Does Nothing!] Ammo Maker for Brita’s! — Workshop ID 2803583478 This item is still tagged Build 41, was last updated May 4, 2022, and requires Ammo Maker plus Arsenal(26) GunFighter. Its own title warns that it probably does nothing, so it is not a Build 42 compatibility solution.

Kitsune Ammo Craft Vanilla — Workshop ID 2755020757: the Workshop item is currently unavailable.
Kitsune Ammo Craft Brita — Workshop ID 2753868915: the Workshop item is currently unavailable.

Troubleshooting missing recipes or components

The mod is subscribed but absent in game: restart the game, then confirm the Workshop download completed and the correct Mod ID is enabled.
The mod appears in the main menu but not the save: add it to that save’s mod list before loading the world.
A recipe is hidden: check the crafting search, category filters, required literature, nearby workstations, skill requirements, and all required components shown by the recipe panel.
Brita or Arsenal ammo is missing: do not use the old Build 41 patch on Build 42. Use only a compatibility route named by the current mod author.
The server rejects a player or recipes differ: compare the server’s Workshop IDs and Mod IDs with every client, then restart the server after synchronization.
Two ammo systems overwrite each other: disable one overhaul and test again in a backup or disposable save before rebuilding the load order.

Project Zomboid Ammo Crafting: Build 42 Vanilla Limits and Mods

What vanilla Build 42 actually allows

Choose a Build 42 ammo mod

Ammocraft

Ammo Maker

Which one should you use?

Install without breaking your save

How the crafting loops work

Ammocraft

Ammo Maker

Do not install these old entries on Build 42

Troubleshooting missing recipes or components

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