Autocannon turret

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Autocannon turret

Autocannon turret

"A heavy automatic turret. Its large-caliber shells do heavy damage over significant ranges, but its barrel must be refurbished after use. It cannot fire at close-up targets, and may explode when damaged."


Type
Security
Placeable
Yes
Size
2 ˣ 2
HP
450
Beauty
-20
Mass
100 kg
Flammability
70%
Power
-150W
Cover Effectiveness
50%
Mode
Burst
Dmg Type
Sharp
Damage
25
Armor penetration
37.5%%
Cooldown
210 ticks (3.5 secs)
Range
32.9 tile(s)
Minimum Range
8.9 tiles
Accuracy
25% - 65% - 60% - 45%
Avg. accuracy
52.3%
Velocity
88 (m/s)
Burst Count
3 (per burst)
Burst Ticks
17 ticks (0.28 secs)
DPS
18.44 (9.65)
Stopping power
0.5
Resources to make
Steel 350 + Plasteel 40 + Component 6
Deconstruct yield
Steel 262 + Plasteel 30 + Component 5


The autocannon turret is a defense structure that fires a burst of medium-damage shells. It has a maximum range of 32.9 tiles, but a per-tile accuracy of only 96% and cannot hit enemies within an 8.9 tile radius. Despite its damage, the autocannon's stopping power is almost non-existent, not even being able to stagger humans - the same is also true for the uranium slug turret.

Since autocannons are large 2x2 structures, ranged attacks are twice as accurate against them. However, autocannons also benefit from being put behind sandbags which mitigates this accuracy bonus.

After firing 90 rounds it requires a barrel change, costing:

  • 90 steel in Peaceful and Base Builder difficulty
  • 135 steel in Medium difficulty
  • 180 steel in Rough difficulty and above

Autocannon turrets have a chance to explode when they drop below 20% health, dealing damage to everything in a large radius.

Radius of autocannon turret explosion. Note the slight offset from the 'true' center of the turret.

Usage

It can be useful in killboxes where it is more likely to hit, by bringing enemies closer together and putting them in range, but otherwise its use is not cost-effective in an open field as its low accuracy makes it unlikely to land shots at range, and it costs quite some steel for each shot.

Due to their damage output, autocannons can be effective at mowing down lancers when grouped, provided you can lure them within its effective range, otherwise the autocannons will have trouble hitting them. Autocannons are also somewhat effective at dishing out damage against large targets such as centipedes since the accuracy bonus from their body size significantly offsets the autocannon's lower accuracy, though centipede weapons can make relatively short work of autocannons too.

Visualization of effective turret range of all three turrets, from uranium slug turret (top), to autocannon turret (middle), to mini-turret (bottom).
Green is 80 - 100% of peak accuracy, blue is 50 - 80% of peak accuracy, red is below 50% of peak accuracy and grey is outside range. Gold tiles are spaced every 5 tiles. Values from 1.0.

Version history

It was added in Beta 19/1.0.

In 1.1 its damage and armor penetration was halved (40 -> 20, 60% -> 30%), and the reload cost was increased (120 -> 180 baseline).

In 1.1.2618 damage and armor penetration was increased (20 -> 25, 30% -> 37.5%).