Difference between pages "Browning-Colt Mk12 Mod 3 (20 mm)" and "M247"

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(Added basic armour, gun and ammunition data, and media link. Velocity and filler amount for HE ammo taken from manual TM 43-0001-28 (April 1994))
 
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{{AutoWeapon-Card
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{{Specs-Card|code=us_m247}}
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| image =
 
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| title = {{PAGENAME}}
 
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| MG-calibre = 20
 
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| Belt-capacity =
 
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| RoF = 996
 
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| MG-velocity = 1,012
 
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| MG-max-pen = 36
 
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}}
 
  
 
== Description ==
 
== Description ==
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<!-- ''Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.'' -->
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<!--''In the description, the first part needs to be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert the screenshot of the vehicle. If the novice player does not remember the vehicle by name, they will immediately understand what kind of vehicle it is talking about.''-->
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The Colt-Browning Mk 12 Mod 3 is an advanced derivative of the [[AN/M3 (20 mm)|20 mm AN/M3]] cannon and became the standard cannon found on US Navy aircraft from the mid-1950s. Compared to the AN/M3 it replaced, the Mk 12 boasted a faster rate of fire and higher muzzle velocity, courtesy of the new electrically-primed cartridges designed specifically for the Mk 12.
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The '''{{Specs|name}}''' is a Rank {{Specs|rank}} American self-propelled anti-aircraft gun {{Battle-rating|1}}. It was introduced in [[Update 1.81 "The Valkyries"]].
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=== Vehicles equipped with this weapon ===
 
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<!-- ''List out vehicles that are equipped with the weapon.'' -->
 
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* {{Specs-Link|fj_4b}}
 
−
* {{Specs-Link|fj_4b_agm_12b}}
 
  
 
== General info ==
 
== General info ==
−
<!-- ''Tell us about the tactical and technical characteristics of the cannon or machine gun.'' -->
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=== Survivability and armour ===
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=== Tactical and technical characteristics ===
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<!--''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat?''
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* Rate of Fire: 996 rounds/min
 
−
* Individual Gun Burst Mass: 1.83 kg/sec
 
−
* Muzzle Velocity: 1,012 metres/sec
 
−
* Projectile Mass: 110 grams
 
−
* HE-I Filler Mass: 14 grams
 
−
* Tracer Colour: Red
 
  
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=== Available ammunition ===
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''If necessary use a visual template to indicate the most secure and weak zones of the armour.''-->
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<!-- ''Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' -->
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'''Armour type:'''
−
The Mk 12 cannon fires 20 x 110 mm USN ammunition, which was developed from the 20 x 110 mm Hispano-Suiza ammunition used by the AN/M2 and AN/M3 cannons.
 
  
−
The Mk 12 Mod 3 cannon can be equipped with the following belts:
+
*Cast homogeneous armour (Hull)
 +
*Rolled homogeneous armour (Rear (low), Roof, Turret)
  
−
* '''Default:''' {{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}
+
{| class="wikitable"
−
: These are comprised of Mk 106 HE-I and Mk 108 AP-T rounds and are the stock belts that come with the cannon.
+
|-
 +
! Armour !! Front (Slope angle) !! Sides !! Rear !! Roof
 +
|-
 +
| Hull || 85-200 mm (59-74°) ''Front glacis'' <br> 63-200 mm (13-60°) ''Lower glacis'' || 76 mm (8-43°) ''Front'' <br> 51 mm (0-43°) ''Rear'' || 35 mm (26-32°) ''Top'' <br> 25 mm (61-62°) ''Bottom'' || 57 mm
 +
|-
 +
| Turret || 25.4 mm (15-76°) ''Turret front (Upper)'' <br> 12.7 mm (40-69°) ''Turret front (Lower)'' <br> 25.4 mm (0-87°) ''Gun mantlet'' || 12.7-25.4 mm (0-19°) ''Upper'' <br> 12.7 mm (40-69°) ''Lower'' || 12.7 mm (18°) || 12.7 mm
 +
|-
 +
|}
 +
'''Notes:'''
  
−
* '''Universal:''' {{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}
+
* Suspension wheels and tracks are 20 mm thick.
−
: These general-purpose belts are made up of the same HE-I and AP-T rounds as the default belts.
+
* Belly armour is 38 mm in the front and 25 mm in the rear.
  
−
* '''Ground targets:''' {{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|AP-I|Armour-piercing incendiary}}
+
=== Mobility ===
−
: Intended to be used against armoured ground targets, these boast a belt made up almost entirely of armour piercing ammunition. It features Mk 106 HE-I, Mk 107 AP-I, and Mk 108 AP-T rounds.
+
''Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability as well as the maximum speed forward and backward.''
  
−
* '''Air targets:''' {{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|AP-I|Armour-piercing incendiary}}
+
== Armaments ==
−
: These belts are arranged in much the same way as the Universal belts. However, every fourth round is now a Mk 107 AP-I round.
+
<!--''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.''-->
 +
{{main|Bofors L/70 (40 mm)}}
  
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* '''Stealth:''' {{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|HEI|High-explosive incendiary}}{{-}}{{Annotation|AP-I|Armour-piercing incendiary}}
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{| class="wikitable" style="text-align:center"
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: These belts contain the most HE-I rounds of any available for the Mk 12, with Mk 106 HE-I and Mk 107 AP-I rounds.
+
|-
 +
! colspan="6" | [[Bofors L/70 (40 mm)|40 mm M266 Automatic Cannon]] (x2)
 +
|-
 +
! colspan="3" rowspan="1" style="width:5em" |Capacity (Belt capacity each)
 +
! rowspan="1" | Fire rate <br> (shots/minute)
 +
! rowspan="1" | Vertical <br> guidance
 +
! rowspan="1" | Horizontal <br> guidance
 +
|-
 +
| colspan="3" | 560 (280) || 300 || -5°/+85° || ±180°
 +
|-
 +
! colspan="6" | Turret rotation speed (°/s)
 +
|-
 +
! style="width:4em" |Mode
 +
! style="width:4em" |Stock
 +
! style="width:4em" |Upgraded
 +
! style="width:4em" |Prior + Full crew
 +
! style="width:4em" |Prior + Expert qualif.
 +
! style="width:4em" |Prior + Ace qualif.
 +
|-
 +
| ''Arcade'' || 52.8 || ? || ? || ? || ?
 +
|-
 +
| ''Realistic'' || 35.7 || ? || ? || ? || ?
 +
|-
 +
! colspan="4" | Reloading rate (seconds)
 +
|-
 +
! colspan="1" style="width:4em" |Stock
 +
! colspan="1" style="width:4em" |Prior + Full crew
 +
! colspan="1" style="width:4em" |Prior + Expert qualif.
 +
! colspan="1" style="width:4em" |Prior + Ace qualif.
 +
|-
 +
| 6.5 || ? || ? || ?
 +
|-
 +
|}
  
 +
=== Ammunition ===
 
{| class="wikitable sortable" style="text-align:center" width="100%"
 
{| class="wikitable sortable" style="text-align:center" width="100%"
−
! colspan="7" | Penetration statistics
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! colspan="8" | Penetration statistics
 
|-
 
|-
 
! rowspan="2" data-sort-type="text" | Ammunition
 
! rowspan="2" data-sort-type="text" | Ammunition
−
! colspan="6" | '''Penetration @ 90° (mm)'''
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! rowspan="2" class="unsortable" | Type of <br /> warhead
−
|-
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! colspan="6" | '''Penetration''' '''''in mm''''' '''@ 90°'''
−
! 10 m || 100 m || 500 m || 1,000 m || 1,500 m || 2,000 m
 
 
|-
 
|-
−
| AP-I || 36 || 33 || 27 || 22 || 17 || 14
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! 10m
 +
! 100m
 +
! 500m
 +
! 1000m
 +
! 1500m
 +
! 2000m
 
|-
 
|-
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| AP-T || 33 || 31 || 27 || 24 || 19 || 14
+
| M811 || HEFI-T* || 5 || 5 || 5 || 5 || 5 || 5
 
|-
 
|-
−
| HEI || 2 || 2 || 2 || 2 || 2 || 2
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| M822 || HEFI-T* || 5 || 5 || 5 || 5 || 5 || 5
 
|-
 
|-
 +
| 40 mm AP-T || AP-T || 93 || 90 || 77 || 62 || 51 || 41
 +
|-
 
|}
 
|}
 
{| class="wikitable sortable" style="text-align:center" width="100%"
 
{| class="wikitable sortable" style="text-align:center" width="100%"
−
! colspan="10" | Shell details
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! colspan="11" | Shell details
 
|-
 
|-
 
! rowspan="2" data-sort-type="text" | Ammunition
 
! rowspan="2" data-sort-type="text" | Ammunition
−
! rowspan="2" | Velocity<br>(m/s)
+
! rowspan="2" class="unsortable" | Type of <br /> warhead
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! rowspan="2" | Projectile<br>Mass (kg)
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! rowspan="2" |Velocity <br /> in m/s
−
! rowspan="2" | Fuse delay<br>(m)
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! rowspan="2" |Projectile<br />Mass in kg
−
! rowspan="2" | Fuse sensitivity<br>(mm)
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! rowspan="2" | ''Fuse delay''
−
! rowspan="2" | Explosive Mass<br>(TNT equivalent) (g)
+
''in m:''
−
! rowspan="2" | Normalisation at 30°<br>from horizontal
+
! rowspan="2" | ''Fuse sensitivity''
−
! colspan="3" | Ricochet
+
''in mm:''
 +
! rowspan="2" | ''Explosive Mass in g<br /> (TNT equivalent):''
 +
! rowspan="2" | ''Normalization At 30° <br> from horizontal:''
 +
! colspan="3" | ''Ricochet:''
 
|-
 
|-
 
! 0%
 
! 0%
Line 80: Line 112:
 
! 100%
 
! 100%
 
|-
 
|-
−
| AP-I || 1,012 || 0.11 || N/A || N/A || N/A || -1.0° || 47° || 60° || 65°
+
| M811 || HEFI-T* || 1100 || 0.87 || 0.2 || 0.1 || 255 || +0° || 79° || 80° || 81°
 
|-
 
|-
−
| AP-T || 1,012 || 0.11 || N/A || N/A || N/A || -1.0° || 47° || 60° || 65°
+
| M822 || HEFI-T* || 1100 || 0.87 || 0.2 || 0.1 || 185 || +0° || 79° || 80° || 81°
 
|-
 
|-
−
| HEI || 1,012 || 0.11 || 0.2 || 0.1 || 18.3 || +0.0° || 79° || 80° || 81°
+
| 40 mm AP-T || AP-T || 1030 || 0.88 || N/A || N/A || N/A || -1° || 48° || 69° || 79°
 
|-
 
|-
 
|}
 
|}
  
−
=== Comparison with analogues ===
+
===Belt types===
−
<!-- ''Give a comparative description of cannons/machine guns that have firepower equal to this weapon.'' -->
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{|class="wikitable" style="text-align:center" width="100%"
−
;Comparable ammunition:
+
|style="width: 8%" | '''Belts'''
−
* [[AN/M3 (20 mm)|AN/M3]] - The predecessor to the Mk 12, and inferior in almost every way. It has a lower rate of fire, lower burst mass, and lower muzzle velocity than the Mk 12 Mod 3.
+
|style="width: 20%" | '''Shell composition'''
−
 
+
| '''Combat usage'''
−
* [[M24A1 (20 mm)|M24A1]] - Derived from the AN/M3, this cannon uses electrically primed cartridges instead of the percussively primed cartridges on all other Hispano variants. Much like the AN/M3, it's inferior in every way to the Mk 12 Mod 3.
+
|-
−
 
+
| ''Default'' || HEFI-T* / AP-T ||align="left"| These work fine, a hit on an aircraft means instant disassembly for it and still is able to hurt ground vehicles, especially if it is side into the side of a enemy tank. These seem like a good I don't know what i will run into belt.
−
* [[Hispano Mk.V (20 mm)|Hispano Mk.V]] - The forerunner to the AN/M3, and by extension the Mk 12. As with the two above, it has a lower muzzle velocity, lower rate of fire, and lower burst mass than the Mk 12.
+
|-
−
 
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|''40 mm AP-T'' || AP-T / AP-T / AP-T / HEFI-T* ||align="left"| Very powerful ammunition against ground targets with significantly more penetration than other 35-40 mm AP-T projectiles. Will easily destroy any target with side shots even outside point blank range, and can destroy lighter targets and weak spots from the front even against MBTs.
−
All three of the above weapons fire 20 x 110 mm Hispano ammunition, which has a higher projectile mass than the 20 x 110 mm USN used by the Mk 12, so each individual shell impact will do more damage.
+
|-
−
 
+
|''M811'' || HEFI-T* / HEFI-T* / HEFI-T* / AP-T ||align="left"| "Poor man's anti-air ammunition." Unlike the M822 shells these require direct hits to do damage, but if you experience problems with M822 detonating too early this belt may be your best choice.
−
* [[M39A1 (20 mm)|M39A1]] & [[FMC T-160 (20 mm)|FMC T-160]] - These are the US Air Force equivalent to the Mk 12. They have a higher muzzle velocity, a much higher rate of fire, and a higher burst mass. However, they have an individual projectile mass nearly 10% lower than that of the Mk 12 and rely more on the sheer number of rounds hitting the target than the size of the shell itself.
+
|-
 +
|''M822'' || HEFI-T* / HEFI-T* / AP-T ||align="left"| Proximity-fused shells that absolutely obliterate anything flying, when they work. Somewhat unreliable in if they detonate within range of the target, but when they do the target will be quickly torn apart. The only ammunition for self-propelled anti-aircraft guns that lets you kill planes and helicopters with near misses. Should be your go-to anti-air ammunition, if it works reliably for you.
 +
|}
  
 
== Usage in battles ==
 
== Usage in battles ==
−
<!-- ''Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.'' -->
+
<!--''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).''-->
−
The Mk 12 is an excellent general-purpose cannon - the high quantity of AP rounds in the ''Ground targets'' belts are ideally suited to taking out lightly armoured vehicles, and a large amount of HE-I rounds in most other belts are easily capable of destroying any opponent. However, the higher rate-of-fire and higher muzzle velocity than the AN/M3 cannons found on the aircraft before it will require some getting used to, particularly when using these cannons against moving targets. Additionally, short bursts are required with a stock cannon but are not a requirement once the ''New 20 mm cannons'' modification has been unlocked.
 
  
 
=== Pros and cons ===
 
=== Pros and cons ===
−
<!-- ''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.'' -->
+
<!--''Summarize and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in a bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - they have a substitution in the form of softer "inadequate", "effective".''-->
  
 
'''Pros:'''
 
'''Pros:'''
−
* Higher velocity ammunition means less lead is required against manoeuvring targets
+
 
−
* High rate-of-fire
+
* Twin 40mm M266 cannon (L/70 40mm Bofors) have a better rate of fire compared to the M42 Duster.
−
* Can fire nearly 400 rounds before jamming when upgraded
+
* The M822 ammunition is proximity fused, and will detonate if the projectile passes close enough to the target.
 +
* The 40mm's pose a serious threat to lightly-armored vehicles.
 +
* Uses the M48 Patton's hull (armor included) = one of the best-protected SPAA in the game.
 +
* Benefits in RB from aim assist thanks to the radar.
  
 
'''Cons:'''
 
'''Cons:'''
−
* As with other high rate-of-fire cannons, it will quickly deplete its ammunition stores.
+
 
−
* Limited to fairly short bursts while stock to prevent jamming
+
* As with all high-rank SPAA, very thin turret armor; a shell strike could instantly end the vehicle.
−
* Inaccurate while stock
+
** Turret is also vulnerable to strafing aircraft + rockets.
 +
*Armor advantages are nullified due to the inclusion of the Hull Break mechanic
  
 
== History ==
 
== History ==
−
''Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Weapon-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>.''
+
''Describe the history of the creation and combat usage of the ground vehicle in more detail than in the introduction. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article.''
  
 
== Media ==
 
== Media ==
−
''An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.''
+
<!--''An excellent addition to the article will be video guides, as well as screenshots from the game and photos.''-->
 +
[https://live.warthunder.com/feed/camouflages/?q=#m247 '''Skins''' and '''camouflages''' for the M247 Sergeant York from live.warthunder.com.]
  
 
== See also ==
 
== See also ==
−
<!-- ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
+
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
−
* ''reference to the article about the variant of the cannon/machine gun;''
+
 
−
* ''references to approximate analogues by other nations and research trees.'' -->
+
* ''reference to the series of the vehicles;''
−
* [[AN/M3 (20 mm)]]
+
* ''links to approximate analogues of other nations and research trees.''
−
* [[Hispano Mk.V (20 mm)]]
 
−
* [[M24A1 (20 mm)]]
 
−
* [[FMC T-160 (20 mm)]]
 
−
* [[M39A1 (20 mm)]]
 
  
 
== External links ==
 
== External links ==
−
<!-- ''Paste links to sources and external resources, such as:''
+
<!--''Paste links to sources and external resources, such as:''
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
−
* ''encyclopedia page on the weapon;''
+
* ''encyclopedia page on tank;''
−
* ''other literature.'' -->
+
* ''other literature.''-->
−
* [[wikipedia:Colt_Mk_12_cannon|[Wikipedia] Colt Mk 12 cannon]]
 
−
* [https://drive.google.com/file/d/1Qadku999lrNkKvifuJ4MzeMlKQ8EBf4G/view?usp=sharing NAVWEPS OP 1866 - 20-mm Aircraft Gun Mark 12 Mods 0, 2, and 3; Description, Operation and Maintenance (PDF)]
 
−
* The following documents also contain information about the Mk 12 cannon, as well as other types -
 
−
** [https://drive.google.com/file/d/1Sc_aDGyOn3RnR8EsqQkzg6AGAQZAW0Xp/view?usp=sharing MIL-STD-637A - Machine and Automatic Guns and Machinegun Trainers Through 30-mm (PDF)]
 
−
** [http://bulletpicker.com/pdf/OP%202215,%20Navy%20Gun%20Type%20Ammunition%20(1972).pdf NAVORD OP 2215 - Navy Gun Type Ammunition (PDF)]
 
−
** [http://bulletpicker.com/pdf/DST-1160G-514-81-VOL2,%20Small%20Caliber%20ID%20Guide%20(20mm%20to%2040mm).pdf Small-Caliber Ammunition Identification Guide, Volume 2 - 20-mm to 40-mm Cartridges (PDF)]
 
  
−
{{USA aircraft cannons}}
+
* [https://warthunder.com/en/news/5714-development-tam-and-m247-sergeant-york-en [Devblog<nowiki>]</nowiki> TAM and M247 Sergeant York]
  
−
[[Category:Aircraft cannons]]
+
{{USA anti-aircraft vehicles}}

Revision as of 03:28, 4 August 2019

M247
us_m247.png
M247
USA flag.png USA
VI Rank
Battle rating:
AB RB SB
9.0 9.0 9.0
Class:
Research:190 000 Specs-Card-Exp.png
Purchase:520 000 Specs-Card-Lion.png
Show in game

Description

The Gun, Air Defence Artillery, Self-Propelled, 40-mm, M247 is a Rank VI American self-propelled anti-aircraft gun with a battle rating of 9.0 (AB/RB/SB). It was introduced in Update 1.81 "The Valkyries".

General info

Survivability and armour

Armour type:

  • Cast homogeneous armour (Hull)
  • Rolled homogeneous armour (Rear (low), Roof, Turret)
Armour Front (Slope angle) Sides Rear Roof
Hull 85-200 mm (59-74°) Front glacis
63-200 mm (13-60°) Lower glacis 		76 mm (8-43°) Front
51 mm (0-43°) Rear 		35 mm (26-32°) Top
25 mm (61-62°) Bottom 		57 mm
Turret 25.4 mm (15-76°) Turret front (Upper)
12.7 mm (40-69°) Turret front (Lower)
25.4 mm (0-87°) Gun mantlet 		12.7-25.4 mm (0-19°) Upper
12.7 mm (40-69°) Lower 		12.7 mm (18°) 12.7 mm

Notes:

  • Suspension wheels and tracks are 20 mm thick.
  • Belly armour is 38 mm in the front and 25 mm in the rear.

Mobility

Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability as well as the maximum speed forward and backward.

Armaments

Main article: Bofors L/70 (40 mm)
40 mm M266 Automatic Cannon (x2)
Capacity (Belt capacity each) Fire rate
(shots/minute) 		Vertical
guidance 		Horizontal
guidance
560 (280) 300 -5°/+85° ±180°
Turret rotation speed (°/s)
Mode Stock Upgraded Prior + Full crew Prior + Expert qualif. Prior + Ace qualif.
Arcade 52.8  ?  ?  ?  ?
Realistic 35.7  ?  ?  ?  ?
Reloading rate (seconds)
Stock Prior + Full crew Prior + Expert qualif. Prior + Ace qualif.
6.5  ?  ?  ?

Ammunition

Penetration statistics
Ammunition Type of
warhead 		Penetration in mm @ 90°
10m 100m 500m 1000m 1500m 2000m
M811 HEFI-T* 5 5 5 5 5 5
M822 HEFI-T* 5 5 5 5 5 5
40 mm AP-T AP-T 93 90 77 62 51 41
Shell details
Ammunition Type of
warhead 		Velocity
in m/s 		Projectile
Mass in kg 		Fuse delay

in m:

Fuse sensitivity

in mm:

Explosive Mass in g
(TNT equivalent): 		Normalization At 30°
from horizontal: 		Ricochet:
0% 50% 100%
M811 HEFI-T* 1100 0.87 0.2 0.1 255 +0° 79° 80° 81°
M822 HEFI-T* 1100 0.87 0.2 0.1 185 +0° 79° 80° 81°
40 mm AP-T AP-T 1030 0.88 N/A N/A N/A -1° 48° 69° 79°

Belt types

Belts Shell composition Combat usage
Default HEFI-T* / AP-T These work fine, a hit on an aircraft means instant disassembly for it and still is able to hurt ground vehicles, especially if it is side into the side of a enemy tank. These seem like a good I don't know what i will run into belt.
40 mm AP-T AP-T / AP-T / AP-T / HEFI-T* Very powerful ammunition against ground targets with significantly more penetration than other 35-40 mm AP-T projectiles. Will easily destroy any target with side shots even outside point blank range, and can destroy lighter targets and weak spots from the front even against MBTs.
M811 HEFI-T* / HEFI-T* / HEFI-T* / AP-T "Poor man's anti-air ammunition." Unlike the M822 shells these require direct hits to do damage, but if you experience problems with M822 detonating too early this belt may be your best choice.
M822 HEFI-T* / HEFI-T* / AP-T Proximity-fused shells that absolutely obliterate anything flying, when they work. Somewhat unreliable in if they detonate within range of the target, but when they do the target will be quickly torn apart. The only ammunition for self-propelled anti-aircraft guns that lets you kill planes and helicopters with near misses. Should be your go-to anti-air ammunition, if it works reliably for you.

Usage in battles

Pros and cons

Pros:

  • Twin 40mm M266 cannon (L/70 40mm Bofors) have a better rate of fire compared to the M42 Duster.
  • The M822 ammunition is proximity fused, and will detonate if the projectile passes close enough to the target.
  • The 40mm's pose a serious threat to lightly-armored vehicles.
  • Uses the M48 Patton's hull (armor included) = one of the best-protected SPAA in the game.
  • Benefits in RB from aim assist thanks to the radar.

Cons:

  • As with all high-rank SPAA, very thin turret armor; a shell strike could instantly end the vehicle.
    • Turret is also vulnerable to strafing aircraft + rockets.
  • Armor advantages are nullified due to the inclusion of the Hull Break mechanic

History

Describe the history of the creation and combat usage of the ground vehicle in more detail than in the introduction. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article.

Media

Skins and camouflages for the M247 Sergeant York from live.warthunder.com.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the vehicles;
  • links to approximate analogues of other nations and research trees.

External links


USA anti-aircraft vehicles
M3 Half-track derivatives  M13 MGMC · M15 CGMC · M16 MGMC
M24 derivative  M19A1
M41 derivative  M42
Radar SPAAG  M163 · M247
Missile SPAA  Imp.Chaparral · LAV-AD · XM975

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