3-inch Gun Motor Carriage M10

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Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

The M10 GMC in the garage.

The 3-inch Gun Motor Carriage M10 is a Rank II French tank destroyer with a battle rating of 3.7 (AB/RB) and 3.3 (SB). It was introduced in Update 1.75 "La Résistance".

The main purpose, usage and tactics recommendations

General play style

The M10 has a powerful gun, good mobility and decent frontal armour (for tank destroyer standards). The best way to describe the M10 is calling it a counterpart to the M18 Hellcat with opposite trade offs. The M18 Hellcat has mobility with paper thin armour whereas the M10 GMC has mediocre mobility with improved armour.

Vehicle characteristics

The M10 GMC takes much from the M4A2 Sherman which it was derived from. The drive train is identical with the drive shaft running from the engine in the rear to the front transmission and sprockets. The hull is sloped to a larger degree. The 3-inch (76 mm) cannon originally mounted on the experimental M6 Heavy Tank lacks the muzzle brake of the 76 mm M1A2 gun used on the later Rank III Sherman's and the M18 Hellcat. The turret is a pentagonal shaped M5 Mount type.

Tactics

The 3-inch (76 mm) cannon is a wonderful and powerful gun. APCBC ammo can penetrate any tank on the battlefield even from long range. The M10 also has AP ammo with no explosive filler that has higher penetration but does less post-penetration damage. Because APCBC has enough penetration, AP ammo is less useful although carrying a few of these shells could prove useful in certain situations. It is not a bad idea to carry HE ammo as well to fight lightly armoured and open top tanks like the M16 SPAA. The powerful gun and potent ammunition makes the M10 a good sniper vehicle at its battle rating, especially with its -10 gun depression, giving the M10 the ability to maximize a hull-down position. Unfortunately, even though this tank destroyer does feature a turret, its rotation speed is extremely slow (< 4.0°/s) due to its historic configuration of only possessing a hand crank for the turret traverse. It is thus better to see it as a regular fragile SPG instead of a turreted SPG and fight from a distance and in possible concealment. Take warning that the gun's excellent penetration is too much for lower tier tanks and can lead to over-penetration, thus dealing less or even no damage to the enemy. Also, start each round with at least six missing shells (as detailed in the Ammo Racks section) to remove the ammo racks on the rear of the turret, reducing turret penetration vulnerability to an instant cook-off.

Weakspots: Side Armour profile

The armour of the M10 is quite decent for the rank and can make shells ricochet when angled properly, but nonetheless the armour is not thick enough to resist the stronger AT weapons of Rank II. The thickest part of the front hull is the 51 mm lower plate and the upper plate is 38 mm, though both are sloping at 55 degrees from vertical. The sides and back are only 19 mm slightly angled and thus can be penetrated by 12.7 mm fire or stronger. This fact is made worse by positioning of ammo racks on the sides, making it easy to one-shot the M10 with a side penetration. The turret has slightly better armour of 57mm angled at 45 degrees on the front but it is still very weak on the sides and back. The turrets top is exposed and because of that artillery barrages and HE shells are much more lethal to the crew. One should avoid angling the armour a great degree as it may expose the weaker side armour at a more perpendicular angle.

Weakspots: Frontal Armour profile

The M10 has roughly the same mobility characteristics as the M4 Sherman’s. The top speed is 41 km/h, the same as the Sherman’s. The turning speed is a bit sluggish as well as the reverse speed. The M10 struggles while driving on inclines due to its narrow tracks. All in all the M10's mobility is moderate and it can get to its location reasonably fast.

The M10 is a support vehicle. Find a good sniping position and lay behind the team taking out enemy tanks from a distance. Try to stay away from enemy tanks to avoid getting killed quickly. If fighting in a close quarter’s environment, do not try to push forward without support. Stay back a couple of paces and let the team mates with heavier tanks charge in.

If in worse case a close quarter scenario is mandatory on maps such as Poland or Normandy, utilize the tank's turning speed to rotate the turret to the right angle. The M10 can turn faster than it can rotate and using its high speed when at high gear can produce some interesting skids via the physics engine to swerve the M10 to angle its gun at an enemy tank around the corner. It is recommended to understand and get a good feel of the M10's mobility and horsepower on dirt and paved roads before attempting this stunt.

Specific enemies worth noting

Counter-tactics

Destroying the M10 is not too hard a task. Though the armour is somewhat mediocre, do not underestimate its ability to make shells ricochet if angled. The gun mantlet can especially be problematic especially for HEAT shells. A smart player will use the M10 passively and will do a good job hiding the side armour. The best way to exploit the weakness of the M10 is to catch it off guard and take advantage of the abysmal turret traverse speed which greatly diminishes the response time for the M10.

In a situation where the M10 has to be faced head on, the best place to shoot the M10 is to the upper left side of the hull. Doing so will knock out the gunner, though this most likely won’t knock out the tank. The follow up shot should go to the upper right side of the hull and that should be the end of the M10. If the turret or the gun starts moving then shoot again at the first spot to knock the gunner out again. Shooting the front of the turret itself is usually not worth it due to the steep angling of the gun mantlet, most likely causing the shot to ricochet off. It is also a good idea to shoot the bottom of the hull to disable the transmission if the M10 is trying to flee.

Weakspots: Rear Armour profile

The M10’s side is lined with ammo racks and it’s extremely easy to one-shot the tank. Simply aim below the turret, shoot the side and the ammo should explode in a blaze of glory. If the ammo does not explode the first time, then try shooting the same spot again or aim more to the front front of the hull to knock out any remaining crew. It is possible to blow up the fuel tanks or set it on fire by shooting the rear of the M10, worse case at least the engine will be disabled.

There is not a whole lot of places to shoot at the back of the M10, though a shot at the turret can knock out the turret crew. Two ammo racks are present at the rear of the turret, but these racks are most likely empty as 1) They are the first two to run dry and 2) Players will usually keep this empty with reduced ammo load. The best place to shoot in the rear would be the engine to immobilize the M10 and potentially set it on fire.

Pros and cons

Pros:

  • Main cannon penetration and damage is very good for the rank and BR, can knock out many tanks in one hit.
  • Mantlet sometimes absorbs shots with its sloped armour.
  • Good gun depression of -10°, perfect for hull-down positions.
  • Frontal glacis is somewhat bouncy due to steep angle.
  • 5 crew members to replace 3 incapacitated crew members, plus one more with Crew Replenishment modification.
  • Turret is sloped that can bounce some incoming shots.
  • Storage bustle on the rear of the turret helps protect it by absorbing shots aimed at it.
  • Turreted purpose-built tank destroyer allows for wide field of fire compared to casemate designs.
  • Pintle mounted HMG can offer effective anti-aircraft fire.
  • A lot of camouflages to unlock with relative ease.
  • Access to modification "Add-on Armour", that actually helps a lot.
  • Has relatively no problem when getting uptiered.

Cons:

  • One of the slowest turret traverse in the game.
  • Reload rate slower than other US tanks at its BR.
  • Top hull armour is extremely thin.
  • Easy to one-shot from the side by exploding the ammo rack.
  • Poor turning abilities, especially while not in motion.
  • Narrow tracks, which offer poor off-road performance.
  • Turret crew is exposed.
  • The vehicle is vulnerable when targeted by artillery barrages due to weak armour and exposed crew.
  • Very vulnerable to planes strafing from a high angle. Even light machine guns can take out the entire turret crew quite easily.
  • Below average reverse speed.

Specifications

Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator


Armaments

1 x 3-inch Gun M7 (54 rounds)
1 x 12.7 mm Browning M2HB heavy machine gun (300 rounds)

Main armament

1 x 3-inch Gun M7
  • Ammunition Capacity: 54 Shells
  • Gun Depression: -10°
  • Gun Elevation: 30°
  • Turret Rotation Speed: 2.7°/s (Stock), 3.7°/s (Upgraded), _._°/s (Prior + Full Crew), _._°/s (Prior + Expert Qualif.), _._°/s (Prior + Ace Qualif.)
  • Reload Rate: 8.1s (Stock), __._s (Full Crew), __._s (Prior + Expert Qualif.), __._s (Prior + Ace Qualif.)
1 x 3-inch Gun M7
  • Ammunition Capacity: 54 Shells
  • Gun Depression: -10°
  • Gun Elevation: 30°
  • Turret Rotation Speed: 2.7°/s (Stock), 3.1°/s (Upgraded), 3.77°/s (Prior + Full Crew), 4.23°/s (Prior + Expert Qualif.), 4.5°/s (Prior + Ace Qualif.)
  • Reload Rate: 8.1s (Stock), 7.15s (Full Crew), 6.68s (Prior + Expert Qualif.), 6.3s (Prior + Ace Qualif.)
1 x 3-inch Gun M7
  • Ammunition Capacity: 54 Shells
  • Gun Depression: -10°
  • Gun Elevation: 30°
  • Turret Rotation Speed: 2.7°/s (Stock), 3.1°/s (Upgraded), 3.77°/s (Prior + Full Crew), 4.23°/s (Prior + Expert Qualif.), 4.5°/s (Prior + Ace Qualif.)
  • Reload Rate: 8.1s (Stock), 7.15s (Full Crew), 6.68s (Prior + Expert Qualif.), 6.3s (Prior + Ace Qualif.)
Ammunition
Ammunition Penetration in mm @ 90° Type of
warhead
Velocity
in m/s
Projectile
Mass in kg
Fuse delay
in m:
Fuse sensitivity
in mm:
Explosive Mass in
TNT equivalent
in g:
Normalization At 30°
from horizontal:
Ricochet:
10m 100m 500m 1000m 1500m 2000m 0% 50% 100%
M62 Shell 127 125 116 106 97 89 APCBC 792 7 1.2 20 63.7 +4° 42° 27° 19°
M42A1 Shell 7 7 7 7 7 7 HE 800 5.8 0.1 0.5 390 +0° 11° 10°
M79 Shot 155 154 131 107 88 72 AP 792 6.8 N/A N/A N/A -1° 43° 30° 25°
Ammo rack
Ammo racks of the M10
Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
6th
rack empty
Recommendations Visual
discrepancy
54 52 (+2) 49 (+5) 37 (+17) 25 (+29) 13 (+41) (+53) Turret empty: 49 (+5) No

Secondary armament

1 x 12.7 mm Browning M2HB heavy machine gun (pintle mount)

Crew

  • Commander
  • Gunner
  • Loader
  • Driver
  • Assistant Driver

Total: 5 Crew members

Armour

Armour Type:

  • Rolled homogeneous armour
  • Cast homogeneous armour (Gun mantlet, Transmission area)
  • Structural steel (Counterweight)
Armour Front (Slope angle) Sides Rear Roof
Hull 38.1 mm (55°)
50.8 mm (7-55°) Transmission area
19.05 mm (38°) Top
25.4 mm Bottom
19.05 mm (28°) Top
25.4 mm (7-52°) Bottom
19.05 mm Front
9.5 mm Rear
Turret 25.4 mm (68-89°) Turret front
57.15 mm (0-47°) Gun mantlet
25.4 mm (24-47°) 25.4 mm (30-47°) Turret rear
50 mm (0-50°) Counterweight
N/A

Notes:

  • Suspensions wheels are 20 mm thick, bogies are 10 mm thick, and tracks are 30 mm thick.
  • Belly armour is 12.7 mm thick.
  • Hull rear sides are protected by attached grousers that gives 20 mm of extra armour.

Engine & mobility

Weight: 29.6 ton (+ 0.5t Add-on Armour)

Max Speed: 45 km/h
Stock

  • Engine Power: 582 hp @ 2900 rpm
  • Power-to-Weight Ratio: 19.66 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: 717 hp @ 2900 rpm
  • Power-to-Weight Ratio: 24.22 hp/ton
  • Maximum Inclination: 43°
Weight: 29.6 ton (+ 0.5t Add-on Armour)

Max Speed: 41 km/h
Stock

  • Engine Power: 363 hp @ 2900 rpm
  • Power-to-Weight Ratio: 12.26 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: 410 hp @ 2900 rpm
  • Power-to-Weight Ratio: 13.85 hp/ton
  • Maximum Inclination: 41°
Weight: 29.6 ton (+ 0.5t Add-on Armour)

Max Speed: 41 km/h
Stock

  • Engine Power: 363 hp @ 2900 rpm
  • Power-to-Weight Ratio: 12.26 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: 410 hp @ 2900 rpm
  • Power-to-Weight Ratio: 13.85 hp/ton
  • Maximum Inclination: 41°

Modules and improvements

First off get all protection modifications: Parts and FPE. After that move on to research modifications from the Firepower tree: Turret Drive, Adjustment of Fire, Elevation Mechanism and M79 shot. Lastly research the Mobility tree: Tracks, Filters, Engine, Transmission, Suspension, Brake System.

History of creation and combat usage

Screenshots and fan art

Skins and camouflages for the _____ from live.warthunder.com.

Sights

RideR2's Realistic gunsight (M76 & M71C & M71D) for M4 Shermans with 76mm cannon, M10, M36, T25 and M26 Pershings

Additional information (links)

References


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fr_m10.png

Icon-country-fra.png 3-inch GMC M10
Nation France
Type Tank destroyer
Rank 2
Battle Rating
3.7
3.7
3.3

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Weight
29,600 kg
65,256 lb
Number of Crew 5
Hull armour thickness
38.1/19.05/19.05/9.5 mm
1.5/0.75/0.75/0.375 inches
Statistics
Engine power (stock)
582 hp
363 hp
363 hp
Engine power (upgraded)
717 hp
410 hp
410 hp
HP/ton ratio (stock)
19.66
19.97
12.26
12.46
12.26
12.46
HP/ton ratio (Upgraded)
24.22
24.61
13.85
14.07
13.85
14.07
Max speed
45 km/h
27.8 mph
41 km/h
25.6 mph
41 km/h
25.6 mph
Main Weapon
1 x 76 mm M7 Cannon
Ammo stowage 54 rounds
Vertical guidance -10°/30°
Secondary Weapon
1 x 12.7 mm M2HB Heavy machine gun
Ammo stowage 300 rounds
Mount Pintle mount
Vertical guidance -10°/28°
Horizontal guidance -60°/60°
Economy
Required RP 14,000 RP
Vehicle cost 55,000 SL
Crew training cost 16,000 SL
Max repair cost*
1,120 SL
1,170 SL
1,150 SL
Free repair time (Stock)
5h 03m
7h 51m
7h 02m
Free repair time (Upgraded)
1h 41m
2h 37m
2h 20m
Warning: this sidebar is a WIP, and can be incorrect. Last updated 1.77.2.170.