Quick answer

A first IRON NEST firing solution is a deliberate sequence: read the order, measure the map, calculate the solution, load exactly what the card says, lay the guns, fire, and read the impact. Do not skip the written firing card — a solution you can read back is a solution you can correct.

This guide is built from tested play sessions and is labelled community-tested. The game patches often; if your build disagrees with a step, the current build wins.

The firing loop in one pass

  1. Check your mission. Read the teletype order and copy the target, bearing, and requested effect exactly.
  2. Measure on the tactical map. Mark the reported position and convert the map distance into a range the calculator can use.
  3. Calculate the solution. Enter the distance, pick the shell type, and choose powder charges in the ballistic calculator. Confirm the suggested elevation.
  4. Write the firing card. Record bearing, distance, charges, elevation, and shell. This card is the source of truth for the shot.
  5. Dispense the ammunition. Take out exactly the shell and powder charges on the card.
  6. Load the gun. Ram the shell, then insert the charges. Ammunition is one-way: powder charges cannot be returned once dispensed, and a shell cannot be pulled out once rammed.
  7. Set the bearing on the armed gun to the value on the card.
  8. Set the elevation to the value on the card.
  9. Arm and fire the gun.
  10. Read the impact on the map and compare it with the target.
  11. Make one correction. Adjust bearing or elevation by the observed miss and fire again.

Load the exact combination

The most common beginner mistakes come from treating loading as flexible. In IRON NEST:

  • Powder charges and shells are irreversible once committed. Decide the full combination before you load, not after.
  • The rotary magazine holds a limited number of rounds — keep an eye on stock before starting a fire mission.
  • More powder means lower elevation and faster flight time, which matters for time-sensitive targets, but it also changes the whole solution.

When in doubt, re-read the firing card. A wrong digit on the gun becomes a wrong shell on the target.

Read the impact and correct once

A precise calculator result can still miss if anything on the gun differs from the card. After the first round lands:

  • Compare the impact mark with the target on the map.
  • Correct one variable at a time — usually bearing or elevation — by the measured offset.
  • Note that enemy counter-battery fire starts after your first round impacts, so the opening shot puts you on the clock. Pre-plan the second solution before firing the first.

Your first mission: minimum kit

  • One shell type you understand (area-effect for soft targets, precision for supply points).
  • A written firing card with all five numbers.
  • A plan for the second shot before the first round lands.
  • A check of the latest patch notes before you start, since controls and timings have changed across builds.

Beginner questions

What should I memorize first? The order of the loop: order → map → calculator → card → load → lay → fire → read. Not the numbers — the sequence.

Why did a precise calculator result still miss? Because the gun did not match the card. Verify bearing, elevation, shell, and charges on the gun before blaming the calculation.

Should I start with Campaign or Challenge? The demo's Chill/Challenge split and the full game's campaign both work; the campaign teaches the loop mission by mission, which is what most beginners want.

Is there a health bar to manage? No. The risk you manage is ammunition, time, and counter-battery pressure, not a hit-point bar.

Sources and update note

Procedure steps are community-tested in the current build and labelled as such; store facts come from the official pages. Last checked August 12, 2026.