[Home](/) / [Module](/categories/7-module) / [Hybrid Weapon](/groups/74-hybrid-weapon) / [250mm Prototype Gauss Gun](/types/7367-250mm-prototype-gauss-gun)

# 250mm Prototype Gauss Gun

Market: [Ship Equipment](/market/9-ship-equipment) / [Turrets & Launchers](/market/10-turrets-and-launchers) / [Hybrid Turrets](/market/86-hybrid-turrets) / [Railguns](/market/555-railguns) / [Medium](/market/565-medium)

Hybrid Weapon · Module · Tech I

## Facts

| Fact | Value |
| --- | --- |
| Mass | 1,000 kg |
| Volume | 10 m³ |
| Capacity | 0.5 m³ |
| Radius | 100 m |
| Portion size | 1 |
| Base price | 74,980.00 ISK |
| Published | Yes |


## Prices

| Market | Value |
| --- | --- |
| Jita 4-4 sell minimum | 191,800.00 ISK |
| Jita 4-4 buy maximum | 66,200.00 ISK |
| The Forge sell minimum | 91,570.00 ISK |
| The Forge buy maximum | 66,210.00 ISK |
| Sell volume | 2375 |
| Buy volume | 2940 |
| Snapshot loaded | 2026-09-07T15:08:50.459Z |
| HTTP last modified | 2026-09-07T14:20:02.000Z |
| Source | esi |


[Order book](/types/7367-250mm-prototype-gauss-gun/prices) · [Price history](/types/7367-250mm-prototype-gauss-gun/history)

## Fitting

| Attribute | Value |
| --- | --- |
| CPU usage | 32 tf |
| Powergrid Usage | 198 MW |


## Structure

| Attribute | Value |
| --- | --- |
| Structure Hitpoints | 40 HP |


## Capacitor

| Attribute | Value |
| --- | --- |
| Activation Cost | 5.6 GJ |


## Miscellaneous

| Attribute | Value |
| --- | --- |
| Used with (Charge Group) | 85 groupID |
| Charges Per Cycle | 1 |
| Charge size | 2 1=small 2=medium 3=l |
| Meta Level | 4 Level |
| Overload rate of fire bonus | -15 % |
| Reload Time | 5 s |
| Required Thermodynamics Level | 1 Level |
| Tech Level | 1 Level |


## Required Skills

| Attribute | Value |
| --- | --- |
| Primary Skill required | 3304 typeID |
| Secondary Skill required | 3300 typeID |


## Turrets

| Attribute | Value |
| --- | --- |
| Damage Modifier | 4.17 x |
| Accuracy falloff | 10800 m |
| Optimal Range | 25920 m |
| Rate of fire | 5.825 s |
| Turret Tracking | 5.904 |


## Heat

| Attribute | Value |
| --- | --- |
| Heat Damage | 1 HP |


## Materials

| Reprocessing yield | Quantity |
| --- | --- |
| [Tritanium](/types/34-tritanium) | 4,110 |
| [Pyerite](/types/35-pyerite) | 1,341 |
| [Mexallon](/types/36-mexallon) | 1,619 |
| [Isogen](/types/37-isogen) | 1 |
| [Nocxium](/types/38-nocxium) | 8 |


## Variations

- [250mm 'Flintlock' Railgun](/types/20589-250mm-flintlock-railgun) (Storyline)
- [250mm 'Scout' Accelerator Cannon](/types/7369-250mm-scout-accelerator-cannon) (Tech I)
- [250mm Carbide Railgun I](/types/7371-250mm-carbide-railgun-i) (Tech I)
- [250mm Compressed Coil Gun I](/types/7373-250mm-compressed-coil-gun-i) (Tech I)
- [250mm Railgun I](/types/570-250mm-railgun-i) (Tech I)
- [250mm Railgun II](/types/3082-250mm-railgun-ii) (Tech II)
- [Caldari Navy 250mm Railgun](/types/15820-caldari-navy-250mm-railgun) (Faction)
- [Dread Guristas 250mm Railgun](/types/13873-dread-guristas-250mm-railgun) (Faction)
- [Federation Navy 250mm Railgun](/types/15840-federation-navy-250mm-railgun) (Faction)
- [Shadow Serpentis 250mm Railgun](/types/13872-shadow-serpentis-250mm-railgun) (Faction)

Links: [Markdown](/types/7367-250mm-prototype-gauss-gun.md) · [JSON](/types/7367-250mm-prototype-gauss-gun.json)