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[[File:Accuracy.png|thumb|The larger the cone is, the bigger the deviation from the target.]]{{about|'''Weapon Accuracy'''|other uses of accuracy|Accuracy}}
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{{about|'''Weapon Accuracy'''|other uses of accuracy|Accuracy}}
 
In borderlands, '''Weapon Accuracy''', also known as '''Accuracy Ratting''', '''Weapon Card Accuracy''', or sometimes (more ambiguously) just '''[[Accuracy]]''', is a rating of how accurate a ''weapon'' is. It describes the deviation of bullets in regards to the body of the weapon. Internally, this rating is quantified as a '''Spread'''.
 
   
 
In borderlands, '''Weapon Accuracy''', also known as '''Accuracy Rating''', '''Weapon Card Accuracy''', or sometimes (more ambiguously) just '''[[Accuracy]]''', is a rating of how accurate a ''weapon'' is. It describes the deviation of bullets in regards to the body of the weapon. Internally, this rating is quantified as a '''Spread'''.
  +
[[File:Accuracy.png|thumb|250px|The larger the cone is, the bigger the deviation from the target.]]
 
== Weapon Card Accuracy and Angle ==
 
== Weapon Card Accuracy and Angle ==
Each weapon has an accuracy indicator in the form of a percentage. This is an indicator of the angle at which the gun fires projectiles; As a note, this percentage determines the angle at which bullets come out of the gun, where 100 is 0° and any other percentages will fall between that and 11.25°.
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Each weapon has an accuracy indicator in the form of a percentage, where a higher percentage yields smaller spread. This is an indicator of the angle of the cone in which the gun fires projectiles.
   
  +
The aperture (angle) of the firing cone is equal to the weapon value "Spread" (in degrees), from which the Accuracy percentage is derived.
A rough equation for the maximum angle of deviation is
 
:''angle'' = 7.488 − 0.072 × ''accuracy'',
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:''Spread'' = 12 × (100% − ''Accuracy'')
  +
where ''Accuracy'' is the percentage value (e.g. 75% Accuracy → 3 Spread → 3° aperture).
where ''angle'' is measured in degrees and ''accuracy'' is the percentage value.
 
:'''Note:''' This is only a general equation; it is not an exact representation of the angle, and there are several outliers. For example, extremely inaccurate guns (0.0%–10%ish) do not fall on any linear or exponential equations within reason. [[Sledge's Shotgun]] has an accuracy of 0.0% and fires at an angle of 11.25°. Furthermore, guns with 35.0% are more accurate than guns with 37.7%{{fact}}.
 
   
You can convert the angle of spread to an "area" ([[Wikipedia:Solid angle|solid angle]]) that bullets fire into using the equation
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You can convert the spread aperture to an "area" ([[Wikipedia:Solid angle|solid angle]]) that bullets fire into using the equation
:''area''&nbsp;= (129<span style="margin-left:0.25em">000</span>/&pi;)&nbsp;&times; (1&nbsp;&minus; cos&thinsp;''angle''),
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:''Area''&nbsp;= (64<span style="margin-left:0.25em">800</span>/&pi;)&nbsp;&times; (1&nbsp;&minus; cos(''aperture''/2)),[[File:Result.gif|frame|Accuracy versus firing area (via Wolfram Alpha)]]
 
where ''area'' is measured in square degrees.
 
where ''area'' is measured in square degrees.
*A gun with 98% accuracy deviates up to 0.432°, firing into a target area of 1.167 deg<sup>2</sup>.
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* A gun with 98% Accuracy has an aperture of 0.24°, firing into a target area of 0.0452 deg<sup>2</sup>.
*A gun with 90% accuracy deviates up to 1.030°, firing into a target area of 6.354 deg<sup>2</sup>.
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* A gun with 90% Accuracy has an aperture of 1.20°, firing into a target area of 1.13 deg<sup>2</sup>.
 
* A gun with 50% Accuracy has an aperture of 6.00°, firing into a target area of 28.3 deg<sup>2</sup>.
*...
 
*A gun with 50% accuracy deviates up to 3.899°, firing into a target area of 94.50 deg<sup>2</sup>.
 
   
The consequence of this is that '''gun accuracy should not be compared as a percentage, but as a distance from 100%.'''
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The consequence of this is that '''gun Accuracy should not be compared as a percentage, but as a distance from 100%.''' Even though the "first" 5 or so accuracy barely have an impact on actual accuracy, every point is "more valuable" the further it is from 100%.
*A 98% accuracy (1.167 deg<sup>2</sup>) [[Sniper Rifle|sniper rifle]] is twice as accurate as a 95.5% accuracy (2.342 deg<sup>2</sup>) sniper rifle.
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* A 98% Accuracy (0.0452 deg<sup>2</sup>) [[Sniper Rifle|sniper rifle]] is twice [[File:Result2.gif|frame|"Accuracy distance from 100%" versus firing area (via Wolfram Alpha)]]as Accurate as a 97.2% Accuracy (0.0887 deg<sup>2</sup>) sniper rifle.
*A 91% accuracy [[Combat Rifle|machine gun]] (5.479 deg<sup>2</sup>) is 71.0% more accurate than an 87% accuracy machine gun (9.369 deg<sup>2</sup>).
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* A 91% Accuracy [[Combat Rifle|machine gun]] (0.916 deg<sup>2</sup>) is 133% more Accurate than an 87% Accuracy machine gun (1.91 deg<sup>2</sup>).
*A 26% accuracy [[shotgun]] (197.1 deg<sup>2</sup>) is 42.1% more accurate than an 11% accuracy shotgun (280.1 deg<sup>2</sup>).
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* A 26% Accuracy [[shotgun]] (61.9 deg<sup>2</sup>) is 43.9% more accurate than an 11% Accuracy shotgun (89.5 deg<sup>2</sup>).
   
 
== Spread ==
 
== Spread ==
Internally, Borderlands keeps track of a weapon's accuracy using a metric called "Spread". It is possible to convert back and forth from Weapon Card Accuracy and Spread with the formulas:
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Internally, Borderlands keeps track of a weapon's accuracy using a metric called "Spread." It is basically the distance of ''Accuracy'' to ''100%'', expressed in degrees. The "back-and-forth" formula is:
  +
:''100%'' - ''Accuracy''&nbsp;= ''Spread''&nbsp;&divide;12
<pre>Spread = 12 &minus; ( 0.12 &times; Accuracy )
 
  +
where ''Accuracy ''is a percentage.
Accuracy = ( 12 &minus; Spread ) / 0.12</pre>
 
 
Each weapon category has a "Base Spread" as described in the below table.
 
Each weapon category has a "Base Spread", as described in the bellow table.
 
   
 
{| class="borderlands"
 
{| class="borderlands"
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! Rocket Launcher
 
! Rocket Launcher
 
| 1.0
 
| 1.0
| 89.0
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| 91.7
 
|-
 
|-
 
! Revolver
 
! Revolver
 
| 1.0
 
| 1.0
| 89.0
+
| 91.7
 
|-
 
|-
 
! Semi-Automatic Sniper Rifle
 
! Semi-Automatic Sniper Rifle
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|}
 
|}
   
From there, this base spread can be modified by the parts that make up the weapon, according to the Borderlands [[stat modifiers]] formulas.
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From there, this base spread can be modified by the parts that make up the weapon, according to the Borderlands [[stat modifiers]] mechanics.
   
 
== Scopes ==
 
== Scopes ==
 
When sighted, all weapons will receive a Spread bonus from their Scope: They will literally be more accurate (!) and shoot straighter. Shotguns and [[Masher]]s will fire in a tighter pattern when sighted.
 
When sighted, all weapons will receive a Spread bonus from their Scope: They will literally be more accurate (!) and shoot straighter. Shotguns and [[Masher]]s will fire in a tighter pattern when sighted.
   
The accuracy bonus is quite a substantial. What is very interesting to note is that this bonus is not stacked additively to the other Spread Bonuses in other parts: It is applied multiplicative afterwards, as its own stand alone field.
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The accuracy bonus is quite substantial. What is very interesting to note is that this bonus is not stacked additively to the other Spread Bonuses in other parts: It is applied multiplicative afterwards, as its own stand alone field.
   
The table bellow also shows the resulting Spread compared to the the weapon's unsighted Spread. All weapons will get the same bonuses from their scopes, except for Machine Guns. The actual bonuses are:
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The table below also shows the resulting Spread compared to the weapon's unsighted Spread. All weapons will get the same bonuses from their scopes, except for Machine Guns. The actual bonuses are:
 
{|
 
{|
 
|-style="vertical-align:top;"
 
|-style="vertical-align:top;"
 
|
 
|
 
{| class="borderlands"
 
{| class="borderlands"
|+ General Scopes
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|+General Scopes
 
! Scope
 
! Scope
 
! Bonus Effect
 
! Bonus Effect
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|
 
|
 
{| class="borderlands"
 
{| class="borderlands"
|+ Support Machine Guns
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|+Support Machine Guns
 
! Scope
 
! Scope
 
! Bonus Effect
 
! Bonus Effect
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|}
 
|}
   
As can be seen, a high powered scope can have a substantial effect on the spread of a weapon. This will of course make Sniper Rifles that much more accurate, but it should be kept in mind that inaccurate weapons, such as [[Matador]]s or [[Anarchy]]s will benefit just as much (extending their useful range from point blank to a few meters).
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As can be seen, a high powered scope can have a substantial effect on the spread of a weapon. This will of course make Sniper Rifles that much more accurate, but it should be kept in mind that inaccurate weapons, such as [[Matador]]s or [[Anarchy (SMG)|Anarchy]]s will benefit just as much (extending their useful range from point blank to a few meters).
   
 
When comparing weapon accuracy, it is important to also consider the scopes.
 
When comparing weapon accuracy, it is important to also consider the scopes.
   
 
== Others ==
 
== Others ==
Borderlands ambiguously speaks of both [[{{PAGENAME}}|Weapon Accuracy]] and [[Accuracy (player)|Player Accuracy]] as simply "Accuracy".
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Borderlands ambiguously speaks of both [[{{PAGENAME}}|Weapon Accuracy]] and [[Accuracy (character)|Character Accuracy]] as simply "Accuracy".
*[[Scattershot]], [[Focus]] and [[Enforcer]] all improve Weapon Accuracy.
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*[[Scattershot]], [[Focus]] and [[Enforcer (Lilith)|Enforcer]] all improve Weapon Accuracy.
 
*[[Proficiency]] improves Player Accuracy.
 
*[[Proficiency]] improves Player Accuracy.
   
== See Also ==
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== See also ==
 
*[[Accuracy]]: A disambiguation page that highlights the differences
 
*[[Accuracy]]: A disambiguation page that highlights the differences
*[[Accuracy (player)]]: the "other" accuracy.
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*[[Accuracy (character)]]: the "other" accuracy.
  +
*[[Zoom]]
*Scopes/Zoom/FOV (page not yet written)
 
   
  +
<!-- Interlanguage Links -->
  +
[[ru:Точность (оружие)]]
 
[[Category:Gameplay]]
 
[[Category:Gameplay]]
 
[[Category:Mechanics]]
 
[[Category:Mechanics]]

Revision as of 14:10, 23 January 2017

In borderlands, Weapon Accuracy, also known as Accuracy Rating, Weapon Card Accuracy, or sometimes (more ambiguously) just Accuracy, is a rating of how accurate a weapon is. It describes the deviation of bullets in regards to the body of the weapon. Internally, this rating is quantified as a Spread.

Accuracy

The larger the cone is, the bigger the deviation from the target.

Weapon Card Accuracy and Angle

Each weapon has an accuracy indicator in the form of a percentage, where a higher percentage yields smaller spread. This is an indicator of the angle of the cone in which the gun fires projectiles.

The aperture (angle) of the firing cone is equal to the weapon value "Spread" (in degrees), from which the Accuracy percentage is derived.

Spread = 12 × (100% − Accuracy)

where Accuracy is the percentage value (e.g. 75% Accuracy → 3 Spread → 3° aperture).

You can convert the spread aperture to an "area" (solid angle) that bullets fire into using the equation

Area = (64800/π) × (1 − cos(aperture/2)),
Result

Accuracy versus firing area (via Wolfram Alpha)

where area is measured in square degrees.

  • A gun with 98% Accuracy has an aperture of 0.24°, firing into a target area of 0.0452 deg2.
  • A gun with 90% Accuracy has an aperture of 1.20°, firing into a target area of 1.13 deg2.
  • A gun with 50% Accuracy has an aperture of 6.00°, firing into a target area of 28.3 deg2.

The consequence of this is that gun Accuracy should not be compared as a percentage, but as a distance from 100%. Even though the "first" 5 or so accuracy barely have an impact on actual accuracy, every point is "more valuable" the further it is from 100%.

  • A 98% Accuracy (0.0452 deg2) sniper rifle is twice
    Result2

    "Accuracy distance from 100%" versus firing area (via Wolfram Alpha)

    as Accurate as a 97.2% Accuracy (0.0887 deg2) sniper rifle.
  • A 91% Accuracy machine gun (0.916 deg2) is 133% more Accurate than an 87% Accuracy machine gun (1.91 deg2).
  • A 26% Accuracy shotgun (61.9 deg2) is 43.9% more accurate than an 11% Accuracy shotgun (89.5 deg2).

Spread

Internally, Borderlands keeps track of a weapon's accuracy using a metric called "Spread." It is basically the distance of Accuracy to 100%, expressed in degrees. The "back-and-forth" formula is:

100% - Accuracy = Spread ÷12

where Accuracy is a percentage. Each weapon category has a "Base Spread" as described in the below table.

Weapon Spread Card
Equivalent
Assault Shotgun 7.0 41.7
Combat Shotgun 6.5 45.8
Support Machine Gun 2.4 80.0
Pistol 2.0 83.3
SMG 2.0 83.3
Combat Rifle 1.3 89.2
Rocket Launcher 1.0 91.7
Revolver 1.0 91.7
Semi-Automatic Sniper Rifle 0.6 95.0
Repeater Sniper Rifle 0.4 96.7

From there, this base spread can be modified by the parts that make up the weapon, according to the Borderlands stat modifiers mechanics.

Scopes

When sighted, all weapons will receive a Spread bonus from their Scope: They will literally be more accurate (!) and shoot straighter. Shotguns and Mashers will fire in a tighter pattern when sighted.

The accuracy bonus is quite substantial. What is very interesting to note is that this bonus is not stacked additively to the other Spread Bonuses in other parts: It is applied multiplicative afterwards, as its own stand alone field.

The table below also shows the resulting Spread compared to the weapon's unsighted Spread. All weapons will get the same bonuses from their scopes, except for Machine Guns. The actual bonuses are:

General Scopes
Scope Bonus Effect Resulting Spread
sightnone -0% 100%
sight1 -15% 86%
sight2 -20% 83%
sight3 -30% 76%
sight4 -50% 67%
sight5 -70% 58%
Support Machine Guns
Scope Bonus Effect Resulting Spread
sightnone -0% 100%
sight1 -35% 74%
sight2 -20% 83%

As can be seen, a high powered scope can have a substantial effect on the spread of a weapon. This will of course make Sniper Rifles that much more accurate, but it should be kept in mind that inaccurate weapons, such as Matadors or Anarchys will benefit just as much (extending their useful range from point blank to a few meters).

When comparing weapon accuracy, it is important to also consider the scopes.

Others

Borderlands ambiguously speaks of both Weapon Accuracy and Character Accuracy as simply "Accuracy".

See also