12 Gauge Incendiary Shell
Incendiary Shotgun Ammunition
The 12 Gauge Incendiary Shell is ammunition in Rust for 6 weapons, among them the M4 Shotgun, Spas-12 Shotgun and Pump Shotgun. Its damage per shot runs from 112.5 in the Spas-12 Shotgun to 150 in the Double Barrel Shotgun. You craft it at a Level 2 Workbench, and its blueprint costs 40 scrap to research.
About the 12 Gauge Incendiary Shell
It fits 6 weapons: the M4 Shotgun, Spas-12 Shotgun, Pump Shotgun, Eoka Pistol, Double Barrel Shotgun and Waterpipe Shotgun. It flies at 100 m/s from the Double Barrel Shotgun and 130 m/s from the M4 Shotgun.
One craft makes 2, so each costs 2.5 × Metal Fragments, 5 × Gun Powder and 10 × Sulfur. A full stack of 64 takes 32 crafts and 96 seconds: 160 × Metal Fragments, 320 × Gun Powder and 640 × Sulfur. When a Supply Drop has it, it holds 4 to 8.
On the tech tree it sits behind 6 other unlocks: 12 Gauge Slug, 12 Gauge Buckshot, Metal Shield, Salvaged Icepick, Salvaged Axe and Longsword. In all, 32 loot sources drop it; the full list of where it drops gives the chance for each.
12 Gauge Incendiary Shell damage and stats
Of the weapons that fire it, the M4 Shotgun gets the most damage per second out of it: 110. Each shot splits into 10 pellets. Where it lands changes its damage: ×0.75 to the legs and feet.
How to craft the 12 Gauge Incendiary Shell
Crafting one takes 3 seconds at a Level 2 Workbench and costs 5 × Metal Fragments, 10 × Gun Powder and 20 × Sulfur. One craft makes 2 of them.
5 
10 
20 
How to get the 12 Gauge Incendiary Shell blueprint
Research it for 40 scrap, or unlock it on the Level 2 tech tree for 7 Blueprint Pages in total.
1 Item 
40 Scrap Blueprint 40 
Node 
1 Blueprint Page Unlocked 7 
Blunderbuss 150 50 2 100 
Double Barrel Shotgun 150 50 2 100 
Eoka Pistol 150 75 1 100 
Krieg Shotgun 150 85.6 8 100 
Pump Shotgun 150 85.6 8 100 
Waterpipe Shotgun 150 33.3 1 100 
M4 Shotgun 120 110 6 130 
Spas-12 Shotgun 112.5 107.2 6 100 Damage is per shot and already carries each weapon’s own scale, so the same round is not the same number in every barrel. DPS assumes the weapon fires without stopping.
What the 12 Gauge Incendiary Shell recycles into
A green recycler always gives back 1 × Metal Fragments, 2 × Gun Powder and 5 × Sulfur for one.
×1 ×2 ×5 25% 50% ×1 ×3 ×6 50% 
×1 ×3 ×7 88% 75% 50% 
×1 ×2 ×4 Where to find the 12 Gauge Incendiary Shell
Supply Drop has the best chance at 50%, followed by Bradley Scientist at 29% and Heavy Scientist at 29%.
Stats checked against the Rust game files on 12 November 2026.
