Incorrect 40mm "Bofors L/70" ammunition for USA, France, Italy, Swedens (Ground & Naval)

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Hi everyone! Me and others have been comparing the Bofors 40 mm Automatic Gun L/70 ammunition as it appears across different nations in-game, and after plotting the data and checking basic performance specs, I’ve run into several inconsistencies that don’t really line up with how this gun system was standardized in real life. It’s time to point out what looks off and to hopefully gather better information and sources with help from the community.

List of potentially affected vehicles

Ground Vehicles:
(USA) Sgt. York M247, (Italy) Bofors 40/70, (France) AMX-13 DCA 40, (Sweden) Lvkv 42, (Sweden) VEAK 40

Naval:
(Ger) Jaguar, (Ger) Köln, (Ger) Hugin, (Ger) Pfeil, (Ger) Schütze, (Ger) Lübeck, (Ita) Saetta P-494, (Ita) Albatros, (Ita) Alcione, (Ita) Freccia P-493, (Ita) Baleno MC-492

Disclaimer:
This post does not cover the Bofors 40mm L/70B, the later modular upgrade introduced in the late 1990s–2000s for platforms such as the CV9040 and K21.
It also does not cover the L/70 Mark 3, the most modern variant.
These systems fall outside the era and do not apply to the vehicles currently represented in-game.

Current Documented Ammunition.(IRL)

Oerlikon:

Sammanfattning

High-Explosive

40mm SSB/K (HE-I) “High-explosive Inciediary
Explosive filler: 140 g. HEXAL 30
Velocity: 1000-1005 m/s

40mm SSBL/K (HE-I-T) “High-explosive Inciediary Tracer
Explosive filler: 140 g. HEXAL 30 (Tracer Removes -18 Grams for it to fit in the round)
Velocity: 1000-1005 m/s

Armour-Piercing

40mm PKLH (APBCHC-T) “Armour-Piercing Ballistic-Capped Hard-Core Tracer
Velocity: 1120 m/s

40mm PSBLH/B (APHE-I) “Armour-Piercing High-explosive Inciediary
Explosive filler: 52 g. HEXAL 30
Velocity: 1000~ m/s

40mm PLH (AP-T) “Armour-Piercing Tracer
Velocity: 1000~ m/s


Penetration Datacards: (Oerlikon) AP Munitions

(Oerlikon) 40mm PKLH (APBC-T)
98 mm (90 Degrees)
95~mm (80 Degrees)
89~mm (70 Degrees)
80~mm (60 Degrees)
70~mm (50 Degrees)
58~mm (40 Degrees)
45~mm (30 Degrees)
N/A (20 Degrees)

(Oerlikon) 40mm PSBLH/B (APHE-I)
58 mm (90 Degrees)
55~mm (80 Degrees)
52~mm (70 Degrees)
49~mm (60 Degrees)
44~mm (50 Degrees)
40~mm (40 Degrees)
35~mm (30 Degrees)
30~mm (20 Degrees)

(Oerlikon) 40mm PLH (AP-T)
60 mm (90 Degrees)
59~mm (80 Degrees)
58~mm (70 Degrees)
55~mm (60 Degrees)
53~mm (50 Degrees)
50~mm (40 Degrees)
45~mm (30 Degrees)
40~mm (20 Degrees)

DIEHL

Sammanfattning

High-Explosive

“DM81 A2” (HEI-T) “High-Explosive Inciediary Tracer
Explosive filler: N/A
Velocity: N/A
“DM 31 A3” (HEI-T) “High-Explosive Inciediary Tracer
Explosive filler: N/A
Velocity: N/A
“DM 68” (Training round)
Explosive filler: N/A
Velocity: N/A

Bofors AB

Sammanfattning

High-Explosive

(Bofors) slsgr m/ 483 (HE-T) “High-Explosive Tracer
Propelant-Type: “Nc 105411,2”
Propelant-Weight:: 500 g
Muzzle-Velocity: 980-1010 m/s
Explosive-Filler: Trotyl (110 grams)
Projectile-Weight: 965 g
Complete-Round Weight: 2520 g

(Bofors) slsgr m/484 (HE-T) “High-Explosive Tracer
Propelant-Type: “Nc 105411,2”
Propelant-Weight: 500 g
Muzzle Velocity: 980-1010 m/s
Explosive Filler: Hexotonal (110 grams)
Projectile Weight: 983 g
Complete-Round Weight: 2520 g

Armour-Piercing

(Bofors) Slrppj m/49(24mm) (APDS-T) “Armour-Piercing Discarding-Sabot
Propelant-Type: N/A
Propellant mass (g) 480-500
Muzzle velocity (m/s) 1200
Projectile mass: 705 g
Core-Projectile Diameter: 24 mm
Complete-Round Weight: 2250 g

Penetration Datacards: (Bofors) AP Munitions

(Bofors) 40mm Slrppj m/49 (24mm) (APDS)
(90 Degrees) 120 mm
(80 Degrees) N/A
(70 Degrees) N/A
(60 Degrees) N/A
(50 Degrees) N/A
(40 Degrees) N/A
(30 Degrees) 40 mm
(20 Degrees) N/A


In-game Ammunition Performance

Detailed In-Game Values

Detailed In-Game Values: And Performance Chart.

Swedish 40mm Bofors L/70 (Designated “Lvakan 48”)

Swedish 40mm Bofors L/70 (Designated “Lvakan 48” In-Service for Sweden)

Edit: Lvakan 48 is known to be incorrect an Bug reported(Here) is currently suggested to the developers as a “Historical error”

French 40mm Bofors L/70 (French License production designated “40mm Mle51 T1”)

Note: The values for this SPAA seems to line-up.

Italy 40mm Bofors L/70 (Italian License production designated “Breda-Bofors 40mm L/70”)

Note: Its strange these rounds share the exact same stats despite being different ammunition types, and could be potentially incorrect.

USA 40mm Bofors L/70 (American License production designated “40mm M226”)

Note: Its strange that all rounds are performing exactly equally to each other And there could be a potential error involved.

If you have anything to add use this formula below:
Nation:
Round Type:
Specs:
Source:

Then Ping “karnitin75”(Author of post) So i can see it and look at it and determine if its relevant and can be added to the collective folder.

Reminder: Do not post or share any classified, export‑restricted or otherwise restricted military‑technical documents on the War Thunder forums Documents/Pictures you have definite proof the material has been officially declassified. See Guidelines For more information


Sources:

US. L/70 documentation

image
image
SGT. York








Unknown Origin/Information


Oerlikon L/70

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Thanks and Happy Hunting!

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