IRON NEST Firing Solution Planner

Calculate a firing solution

Use measurements from the current order, map or spotter report. Inputs begin empty so a previous or illustrative value cannot look like the current mission. Auto selects the minimum valid charge; a higher valid charge can be chosen to calculate its corresponding elevation.

How the calculation works

The modeled elevation is range in kilometers multiplied by 12, then divided by the selected powder charge. The six charge bands each extend the modeled maximum range by 5 kilometers, producing a 30-kilometer V1 limit.

The optional mils output uses a NATO 6400-circle conversion of the resulting bearing. It is included for note comparison, not as a claim that the game requires mil input.

Direct mode

1. Read the current target bearing and range, keeping the labels and units attached.
2. Enter bearing from 0° to 360° and range from 0.01 to 30.00 km.
3. Leave charge on Auto for the minimum valid charge, or select a valid higher charge.
4. Calculate and copy the resulting firing card.

Spotter mode

Spotter mode treats bearings as clockwise from north. It converts the Nest-to-Spotter and Spotter-to-Target legs into east and north components, adds the vectors, then derives the target bearing and range from the Nest.

1. Enter the bearing and distance from the Nest to the Spotter.
2. Enter the bearing and distance from the Spotter to the target.
3. Calculate the combined target position and review the returned charge and elevation.
4. If the combined target exceeds 30 km, return to the current report instead of forcing a result.

Use the firing card in game

The copied card keeps bearing, NATO mils, range, selected powder charge, minimum charge and gun elevation together. Compare those values with the current in-game calculator and setup before loading or firing. The planner does not choose a shell or determine whether a target, objective or result is correct.

• Keep the current target identity attached to the copied card.
• Confirm the selected charge is the one physically prepared.
• Apply bearing and elevation as separate setup values.
• Read the current game result before making any correction.

Evidence and model boundary

The elevation model is derived from multiple public Steam community guides and cross-checked against visible values in a Steam-hosted UI example. One guide identifies Version 1.0 (1558); the current developer formula itself is not published. No reviewed patch note lists a later ballistics change, but that absence is not runtime verification of every later build.

This V1 therefore limits itself to independently implemented geometry, charge bands and the cross-checked linear elevation model. Shell effects, damage, radius, speed, dispersion, cost and flight-time estimates are deliberately absent until they have a separate current-version evidence and rights chain.