Before we go forward, im basing this on that Japanese Tank Gun Penetration gets corrected. AP shells in this game are extremely underperforming and it makes Japan suffer the most.
Type 94 37mm
Type 94 APHE (0.7kg at 575m/s)
43mm @ 0m (0 Degrees)
18mm @ 0m (60 Degrees)
Type 98 37mm
Type 1 APHE (0.726kg at 704m/s)
56mm @ 0m (0 Degrees)
24mm @ 0m (60 Degrees)
Type 1 37mm
Type 1 APHE (0.726kg at 800m/s)
64mm @ 0m (0 Degrees)
28mm @ 0m (60 Degrees)
Type 1 47mm
Type 1 APHE (1.49kg at 810m/s)
82mm @ 0m (0 Degrees)
38mm @ 0m (60 Degrees)
Type 2 57mm
Type 1 APHE (2.7kg at 810m/s)
96mm @ 0m (0 Degrees)
47mm @ 0m (60 Degrees)
Type 3 75mm
Type 1 APHE (6.56kg at 668m/s)
97mm @ 0m (0 Degrees)
51mm @ 0m (60 Degrees)
Tokku Ko APHE (6.615kg at 683m/s)
118mm @ 0m (0 Degrees)
53mm @ 0m (60 Degrees)
Type 5 75mm
Type 1 APHE (6.56kg at 824m/s)
131mm @ 0m (0 Degrees)
67mm @ 0m (60 Degrees)
Tokku Ko APHE (6.615kg at 850m/s)
161mm @ 0m (0 Degrees)
70mm @ 0m (60 Degrees)
90mm JGSDF / Type 61
M318A1 APBC (10.91kg at 914m/s)
222mm @ 0m (0 Degrees)
88mm @ 0m (60 Degrees)
Type 5 105mm
Type 2 APHE (16kg at 1000m/s)
264mm @ 0m (0 Degrees)
112mm @ 0m (60 Degrees)
Tier 1
Ha-Go Model 1936 - Reserve (6.5mm MG, Type 94 gun)
Ha-Go Model 1937 - Reserve (7.7mm MG, Type 94 Gun)
Ha-Go Model 1938 - Reserve (7.7mm MG, Type 98 Gun)
Type 89 I-Go - 1.0BR
Type 97 Chi-Ni - 1.0BR [STARTER PREMIUM]
Type 97 Chi-Ha - 1.3BR
Type 98 Chi-Ho - 2.0BR [PREMIUM]
Tier 2
Type 98 Chi-Ha Kai - 2.3BR
Type 2 Ho-I - 2.7BR
Type 1 Chi-He - 2.7BR
Type 2 Ho-I (57mm) - 3.3BR [PREMIUM]
Type 3 Chi-Nu - 3.7BR (Tokku Ko APHE)
Tier 3
Type 4 Chi-To (57mm) - 3.7BR [PREMIUM]
Type 3 Chi-Nu Kai - 4.3BR (Type 1 APHE)
Type 3 Chi-Nu II - 4.7BR (Tokku Ko APHE)
Type 4 Chi-To - 5.0BR (Tokku Ko APHE)
Type 4 Chi-To Late - 5.0BR (Tokku Ko APHE)
Tier 4
Type 5 Chi-Ri II - 5.3BR (Tokku Ko APHE, fixed autoloader mechanism and reload speed)
O-I Heavy - 5.3BR
STA-1 - 6.0BR (M318A1 AP / M71HE)
STA-2 - 6.0BR (M318A1 AP / M71 HE)
STA-4 - 6.0BR (M318A1 AP / M71 HE) [PREMIUM]
STA-3 - 6.3BR (M318A1 AP / M71 HE)
Note: STA-1 came in 1956, STA-2 in 1957, STA-4 in 1959, STA-3 in 1960 and Type 61 was introduced in 1961. M431 HEAT is also called Type 70 HEAT meaning it came into service in 1970 meaning only Type 61 could use it. US decommissioned M82 APCBC in 1950 due to being obselete and the M318A1was much superior either way. There are no sources to support that Japan used anything other than these 3 main rounds. M318A1 AP , M71 HE and Type 70 HEAT, meaning historically speaking the STA’s should not have APCR or the M348 HEAT, just the APBC and HE rounds.
Tier 5
M47 Patton - 7.3BR (M348 HEAT)
Type 61 - 7.3BR (M431 HEAT)
Type 61 (B) - 7.3BR (M431 HEAT) [PREMIUM]
STB-1 - 8.0BR (L28A1 APDS)
Type 74C - 8.3BR (Type 91 HEAT)
Type 74E - 8.7BR (M735 APFSDS)
Note: Japan recieved a single example of M47 Patton in early 1950’s and since M431 didnt enter service with US until 1965, theres no way it would have M431, therefore only access to M348 HEAT
Tier 6
Type 74F - 9.0BR (Type 93 APFSDS)
Type 16 FPS - 9.0BR (M735 APFSDS) [PREMIUM]
Type 74G - 9.3BR (Type 93 APFSDS)
Type 16 - 9.7BR (Type 93 APFSDS)
STC-1 - 10.0BR (JM23 APFSDS)
STC-2 - 10.7BR (JM23 APFSDS)
Note: Type 90 composite is Ceramic based, making it similar to C-Tech on Leopard 2’s after 1987. Since Leopard 2A5 hull is 750mm LOS composite offering 450mm KE, Type 90 hull which is 580mm LOS should offer only 350mm KE, Turret with 670mm LOS should offer 400mm KE (making its turret invulnerable to JM23 at 250m). Yes this would be armour nerf for Type 90’s.
[STC-1 from 1982. Appears to be using all steel hull, doesnt have autoloader, uses indegenous japanese 120mm smoothbore gun, DM33 didnt come until 1987, The turret composite is different and the mantlet is bigger compared to the final product]
[STC-2, 2nd prototype which came in 1986. Has some external differences to the production Type 90 but the main difference is that it still uses Japanese indigenous 120mm smoothbore gun instead of the Rheimetall one and since its still 1986, There is no DM33/JM33, just DM23/JM23.
Tier 7
Type 90 - 11.0BR (JM33 APFSDS) [Original 1st gen thermals]
Type 90B - 11.0BR (JM33 APFSDS) [Newer, 2nd gen thermals]
TKX - 11.7BR (Type 10 APFSDS)
Type 10 - 11.7BR (Type 10 APFSDS)
Ho-Ri Prototype is fake basically and should be replaced with STA-4 as premium
Ho-Ri Production should be replaced with Either Ho-Ri II (Chi-Ri II chassis Tank Destroyer with Type 5 105mm gun) since at least that was the chosen model for production, OR Ka-To which uses existent Na-To chassis with Type 5 105mm gun. 6.7BR.