In earlier builds of Project Zomboid, firearms relied on a pure "chance to hit" system, whereas the newer overhaul uses a "chance to damage" system in which missed shots still connect and stagger targets without causing actual harm. Some players may prefer the original system due to the updated damage calculations that alter shotgun crowd-control mechanics, making it less likely to eliminate multiple zombies with a single shell. Additionally, reverting to the legacy mechanics resolves visual discrepancies introduced by the overhaul, preventing scenarios in which the undead appear to absorb point-blank shotgun blasts without taking damage.

How to Restore Build 41 Firearm Damage Mechanics in Build 42 on a Project Zomboid Server (Panel)

1. Log in to the BisectHosting Starbase panel.

2. Stop the server.

3. Go to the Files tab.

4. Find the following directory: /home/container/.cache/server

5. Open the [SaveName]_SandboxVars.lua file. The .ini file is labeled depending on the Save/Config Name in the Startup tab.

6. On the FirearmUseDamageChance line, change the value to 1.

7. Press the Save button.

8. Start the server.

How to Restore Build 41 Firearm Damage Mechanics in Build 42 on a Project Zomboid Server (Admin Menu)

1. Join the server as an admin.

2. Click the Admin icon to open the Admin Panel.

3. Select Sandbox Options.

4. Go to the Character tab.

5. On the Firearms Use Damage Chance field, choose Disabled.
 

6. Click Apply Changes.