If the ballistic calculator has stopped working in IRON NEST: Heavy Turret Simulator, don’t worry—you can still land shots manually. The game gives you everything you need to calculate the correct elevation; you just need to know how the charge system and firing angle work together.
Once you understand the simple relationship between powder charges, maximum range, and elevation, manual aiming becomes much less intimidating. In fact, after a few shots, you can start doing the calculations surprisingly quickly.
Here’s the practical method I use to work out the firing angle.
IRON NEST Heavy Turret Simulator Manual Aiming & Ballistics Guide
The most important number to remember is the turret’s maximum elevation of 60°.
Each powder-charge level gives the shell a different maximum range when fired at that elevation. You can use that maximum range to calculate how many meters of horizontal distance correspond to each degree.
The basic formula is:
Maximum Range ÷ 60 = Meters per Degree
That gives you the following values:
| Powder Charges | Maximum Range | Meters per Degree |
|---|---|---|
| 1 | 5,000 m | 83.33 m |
| 2 | 10,000 m | 166.66 m |
| 3 | 15,000 m | 250 m |
| 4 | 20,000 m | 333.33 m |
| 5 | 25,000 m | 416.66 m |
| 6 | 30,000 m | 500 m |
So, for example, if you’re using 3 charges, every degree of elevation represents roughly 250 meters of range.
Choosing the Correct Number of Charges
The first thing you need to do is estimate the distance to your target.
You don’t necessarily need an exact measurement down to the last meter. Landmarks, the game’s distance information, or your visual estimate can usually get you close enough to start.
Then choose the smallest number of charges capable of reaching the target.
For example:
- Target at 4,000 m → 1 charge is enough
- Target at 8,000 m → 2 charges
- Target at 12,000 m → 3 charges
- Target at 18,000 m → 4 charges
- Target at 24,000 m → 5 charges
- Target at 29,000 m → 6 charges
There’s no reason to use six charges against a target that’s only a few kilometers away.
How to Calculate the Firing Angle
Once you’ve selected the appropriate charge level, use this formula:
Target Distance ÷ Meters per Degree = Elevation Angle
That’s all there is to it.
Let’s say your target is 12,000 meters away.
Three charges can reach up to 15,000 meters, so three charges are sufficient.
For three charges:
15,000 ÷ 60 = 250 meters per degree
Now calculate the elevation:
12,000 ÷ 250 = 48°
Set your turret to approximately 48°, load three charges, and you’re ready to fire.
Example: 8,000-Meter Target
Let’s try another one.
Your target is 8,000 meters away.
Two charges have a maximum range of 10,000 meters, so two charges are enough.
The calculation is:
10,000 ÷ 60 = 166.66 meters per degree
Then:
8,000 ÷ 166.66 ≈ 48°
So you’d aim at roughly 48° with two charges.
Example: 20,000-Meter Target
Now suppose you’re engaging something at exactly 20,000 meters.
You’ll need four charges because three charges only reach 15,000 meters.
Four charges give you:
20,000 ÷ 60 = 333.33 meters per degree
Then:
20,000 ÷ 333.33 ≈ 60°
So you’d use four charges at approximately 60°.
That’s effectively the maximum elevation for that charge level.
Quick Manual Aiming Cheat Sheet
If you don’t want to pull out a calculator every time, this is the table worth keeping nearby:
| Distance | Charges | Approx. Angle |
|---|---|---|
| 1,000 m | 1 | 12° |
| 2,000 m | 1 | 24° |
| 3,000 m | 1 | 36° |
| 4,000 m | 1 | 48° |
| 5,000 m | 1 | 60° |
| 6,000 m | 2 | 36° |
| 8,000 m | 2 | 48° |
| 10,000 m | 2 | 60° |
| 12,000 m | 3 | 48° |
| 15,000 m | 3 | 60° |
| 16,000 m | 4 | 48° |
| 20,000 m | 4 | 60° |
| 24,000 m | 5 | ~57.6° |
| 25,000 m | 5 | 60° |
| 30,000 m | 6 | 60° |
The Fastest Way to Do the Calculation
Once you’ve memorized the six meters-per-degree values, you can calculate most shots in just a few seconds.
Think of it like this:
1 charge → 83.33 m/°
2 charges → 166.66 m/°
3 charges → 250 m/°
4 charges → 333.33 m/°
5 charges → 416.66 m/°
6 charges → 500 m/°
Then simply:
Distance ÷ value = angle
For example, a target at 18,000 meters:
18,000 ÷ 333.33 ≈ 54°
So use 4 charges and roughly 54° elevation.
What If the Target Is Between Two Ranges?
You don’t need to use the maximum number of charges just because it’s available.
Always choose the lowest charge level that can reach your target.
For instance, an enemy at 14,000 meters could technically be attacked with four charges, but three charges already reach 15,000 meters.
Using three charges:
14,000 ÷ 250 = 56°
So your shot would be approximately 56° with three charges.
Aiming Tips for Better Accuracy
Manual calculations get you into the right neighborhood, but don’t forget that actual combat isn’t always a perfect mathematical exercise.
If you’re slightly off target, make small adjustments rather than completely changing your setup.
A good routine is:
- Estimate the target distance.
- Pick the lowest charge that can reach it.
- Calculate the meters-per-degree value.
- Divide the target distance by that value.
- Set the elevation.
- Fire.
- Watch where the shell lands.
- Adjust slightly if necessary.
Once you’ve fired a few shots, you’ll get a much better feel for how much adjustment is needed.
Final Manual Aiming Formula
If you only remember one thing from this guide, remember this:
Elevation = Target Distance ÷ (Maximum Range ÷ 60)
Or, even more simply:
Distance ÷ Meters per Degree = Angle
For a 12,000-meter target, for example:
3 charges → 15,000 m maximum range
15,000 ÷ 60 = 250
12,000 ÷ 250 = 48°
So the answer is 3 charges + 48° elevation.
Once you’ve memorized the charge table, the ballistic calculator becoming unavailable isn’t nearly as scary as it first seems. Get the distance, pick the right charge, do the division, and let the turret do the rest.