M247

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Gun, Air Defence Artillery, Self-Propelled, 40-mm, M247
us_m247.png
AB
RB
SB
General characteristics
Brief
Detailed
8.0/8.0/8.0BR
SPAAClass
3 peopleCrew
192 %Visibility
front / side / backArmour
110 / 76 / 35Hull
25 / 12 / 12Turret
Mobility
49.4 tWeight
1 431 hp750 hpEngine power
29 hp/t15 hp/tSurface density
52 km/h forward
9 km/h back
47 km/h forward
9 km/h back
Speed
Armament
2 x 40 mm M266 automatic cannonMain weapon
560 roundsAmmunition
5.0 / 6.5 sReload
280 roundsBelt capacity
300 shots/minFire rate
-5° / 85°Vertical guidance
two-planeStabilizer
Economy
180 000 Rp icon.pngResearch
490 000 Sl icon.pngPurchase
Sl icon.png4 600 / 6 932/2 200 / 3 315/7 600 / 11 453Repair
140 000 Sl icon.pngCrew training
490 000 Sl icon.pngExperts
2 000 Ge icon.pngAces
214 % Rp icon.pngReward for battle
170 % Sl icon.png130 % Sl icon.png140 % Sl icon.png

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 8.0 (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

The M247's turret is installed on the hull of an M48 medium tank, because of this they have roughly similar mobility. The M247 is about 3 tons heavier than the M48A1 (49.3 tons vs. 46.4 tons), and has a slightly weaker engine, which translates into a slightly more sluggish machine compared to the M48A1. The M48A1 has a max engine power of 810 hp, while the M247's engine power is 750 hp. For a vehicle this heavy, it has fairly good mobility. When spaded, it can comfortably hit a top speed of 45 kph on flat terrain, while in cross-country you will have a top speed of around 25 kph. While going backwards, the top speed is somewhat less impressive, about -9 kph.

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 hit planes and helicopters even with near misses. Should be your go-to anti-air ammunition, if it works reliably for you.

Usage in battles

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).

Pros and cons

Pros:

  • Twin 40mm M266 cannon (L/70 40mm Bofors) have a much higher rate of fire compared to the M42 Duster
  • Large ammunition count ensures that you will have plenty to fire throughout a match without fear of running out of ammo mid-game
  • Has access to 12x 66 mm smoke grenades if you find the need to escape a dangerous situation
  • 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-armoured vehicles
  • Uses the M48 Patton's hull (armour included) = one of the best-protected SPAA in the game
  • Benefits in RB from aim-assistance thanks to the radar
  • Has access to NVD for use in night battles
  • Large radar sweep range to easily spot targets, as well as a large radar lock-on marker in its scope

Cons:

  • As with all high-rank SPAA, the M247 has very thin turret armour; a shell strike could instantly end the vehicle
    • Turret is also vulnerable to strafing aircraft + rockets
  • Armour advantages are nullified due to the inclusion of the Hull Break mechanic
  • No thermal sights

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
Based on M3  M13 MGMC · M16 MGMC · M15A1 CGMC
Based on M24  M19
Post-war  M42 · M163 · M247