[Home](/) / [Module](/categories/7-module) / [Hybrid Weapon](/groups/74-hybrid-weapon) / [425mm Prototype Gauss Gun](/types/7447-425mm-prototype-gauss-gun)

# 425mm Prototype Gauss Gun

## Tools

[Reprocess](/reprocess?type=7447) · [Appraise](/appraise) · Market: [Amarr orders](/market?type=7447&region=10000043); [Amarr regional history](/market?type=7447&region=10000043&tab=history); [Dodixie orders](/market?type=7447&region=10000032); [Dodixie regional history](/market?type=7447&region=10000032&tab=history); [Hek orders](/market?type=7447&region=10000042); [Hek regional history](/market?type=7447&region=10000042&tab=history); [Jita orders](/market?type=7447&region=10000002); [Jita regional history](/market?type=7447&region=10000002&tab=history); [Rens orders](/market?type=7447&region=10000030); [Rens regional history](/market?type=7447&region=10000030&tab=history)

Orders cover the selected hub region. Price history is regional, not station-specific.

## Overview

Market: [Ship Equipment](/market/9-ship-equipment) / [Turrets & Launchers](/market/10-turrets-and-launchers) / [Hybrid Turrets](/market/86-hybrid-turrets) / [Railguns](/market/555-railguns) / [Large](/market/566-large)

Hybrid Weapon · Module · Tech I

## Facts

| Fact | Value |
| --- | --- |
| Mass | 2,000 kg |
| Volume | 20 m³ |
| Capacity | 1 m³ |
| Radius | 1,000 m |
| Portion size | 1 |
| Base price | 744,812.00 ISK |
| Published | Yes |


## Prices

| Market | Value |
| --- | --- |
| Jita 4-4 sell minimum | 536,900.00 ISK |
| Jita 4-4 buy maximum | 383,900.00 ISK |
| The Forge sell minimum | 485,000.00 ISK |
| The Forge buy maximum | 384,000.00 ISK |
| Sell volume | 6333 |
| Buy volume | 20143 |
| Snapshot loaded | 2026-09-12T06:22:03.583Z |
| HTTP last modified | 2026-09-12T05:50:01.000Z |
| Source | snapshot |


[Order book](/types/7447-425mm-prototype-gauss-gun/prices) · [Price history](/types/7447-425mm-prototype-gauss-gun/history)

## Fitting

| Attribute | Value |
| --- | --- |
| CPU usage | 56 tf |
| Powergrid Usage | 2200 MW |


## Structure

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


## Capacitor

| Attribute | Value |
| --- | --- |
| Activation Cost | 16.8 GJ |


## Miscellaneous

| Attribute | Value |
| --- | --- |
| Used with (Charge Group) | 85 groupID |
| Charges Per Cycle | 1 |
| Charge size | 3 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 | 3307 typeID |
| Secondary Skill required | 3300 typeID |


## Turrets

| Attribute | Value |
| --- | --- |
| Damage Modifier | 3.63 x |
| Accuracy falloff | 21600 m |
| Optimal Range | 51840 m |
| Rate of fire | 8.129 s |
| Turret Tracking | 1.04598 |


## Heat

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


## Materials

| Reprocessing yield | Quantity |
| --- | --- |
| [Tritanium](/types/34-tritanium) | 51,246 |
| [Pyerite](/types/35-pyerite) | 13,146 |
| [Mexallon](/types/36-mexallon) | 4,386 |
| [Isogen](/types/37-isogen) | 1,192 |
| [Nocxium](/types/38-nocxium) | 185 |
| [Zydrine](/types/39-zydrine) | 9 |
| [Megacyte](/types/40-megacyte) | 16 |


[Reprocessing calculator](/reprocess?type=7447)

## Variations

- [425mm 'Popper' Railgun](/types/20591-425mm-popper-railgun) (Storyline)
- [425mm 'Scout' Accelerator Cannon](/types/7449-425mm-scout-accelerator-cannon) (Tech I)
- [425mm Carbide Railgun I](/types/7451-425mm-carbide-railgun-i) (Tech I)
- [425mm Compressed Coil Gun I](/types/7453-425mm-compressed-coil-gun-i) (Tech I)
- [425mm Railgun I](/types/574-425mm-railgun-i) (Tech I)
- [425mm Railgun II](/types/3090-425mm-railgun-ii) (Tech II)
- [Brynn's Modified 425mm Railgun](/types/14397-brynns-modified-425mm-railgun) (Officer)
- [Caldari Navy 425mm Railgun](/types/15817-caldari-navy-425mm-railgun) (Faction)
- [Dread Guristas 425mm Railgun](/types/13879-dread-guristas-425mm-railgun) (Faction)
- [Estamel's Modified 425mm Railgun](/types/14405-estamels-modified-425mm-railgun) (Officer)
- [Federation Navy 425mm Railgun](/types/15837-federation-navy-425mm-railgun) (Faction)
- [Kaikka's Modified 425mm Railgun](/types/14401-kaikkas-modified-425mm-railgun) (Officer)
- [Setele's Modified 425mm Railgun](/types/14399-seteles-modified-425mm-railgun) (Officer)
- [Shadow Serpentis 425mm Railgun](/types/13878-shadow-serpentis-425mm-railgun) (Faction)
- [Vepas' Modified 425mm Railgun](/types/14403-vepas-modified-425mm-railgun) (Officer)

## Formats

Links: [Markdown](/types/7447-425mm-prototype-gauss-gun.md) · [JSON](/types/7447-425mm-prototype-gauss-gun.json)