This is a personal compilation of uncommon/obscure caliber weapons.

Since military expertise varies (and I’m no expert myself), I’ll be progressively documenting which weapons and mods use obscure/niche ammunition calibers – making it easier to correctly implement these rounds in your projects.

This thread compiles information on ammunition types with rarely used calibers, including their respective users and source mods.

For certain mods that have been long-abandoned or suffer from feature bloat, I may omit them from this listing. The "R" suffix in ammunition caliber designations indicates a rimmed cartridge case.
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这是一个个人向的非常用口径武器的整理。

由于大家的军事知识并非都是大师级的，包括我也是个新手，我就在这里慢慢更新一下各类非常见口径所对应的武器与Mod来源有哪些，以方便大家调用对应口径的弹药。

对于一些长期缺乏维护的mod，或者内容相对有些臃肿的mod，我可能不会在这里列举。

本讨论贴集中整理了一些非常见口径弹药所相对应的使用者以及Mod出处，弹药口径后缀的"R"表示凸缘弹壳(rimmed)。
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in PBs M200(波兰球的M200)

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in PBs IWS2000 - Deep Modification Type(波兰球的IWS2000(深度改进型))

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The PAW20 appears in multiple mods, and I've compiled a list of them all to help streamline your mods.

PAW20在多个Mod中都有，我把他们都列举了出来方便大家简化Mod列表。

in PBs 20x42mm Inkunzi Strike Grenade Machinegun

Additionally, a 20x42mm automatic turret has been implemented.
同时还添加了20x42mm自动炮塔。

in Local's CE Launchers

in GTek's Arsenal 2.0 - Ultimate Survival and Colony Defense

in Paramount Combat Armaments(PCA武器包)

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in Combat Enthusiast's Collection (Continued)

This mod also includes both the PAW20 and M200.

这个Mod同样包含PAW20和M200

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in Ancient amorphous threat(远古无定型威胁)

This weapon supports single-shot, burst fire, and full-auto modes.
这款武器支持单发、短点射和全自动模式。。

in ExGT Bio Mechanoid(实验装备：生物机械体)

This weapon is limited to semi-automatic single-shot fire only.
这款武器只支持单发射击模式。

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in Local's CE Longshots

The NTW-20 in this mod utilizes 20×102mm NATO ammunition.
该Mod中的NTW-20使用的是20x102mmNATO弹药。

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The 20×128mm Oerlikon round is arguably the most powerful 20mm autocannon ammunition, though it comes with significantly greater recoil.

20x128mm厄利孔机炮弹大概是威力最大的20mm机炮弹了，但它的后坐力也相对更大。

in Local's CE Turrets and Sentries

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in Just a Solothurn S18

in Paramount Combat Armaments(PCA武器包)

in L39，L39/44 anti-tank gun

in RimThunder - Ardennes Assault(边缘雷霆 - 阿登突击)

in Fortifications - Industrial(防御工事 - 工业)

in Fortification Industrial - Citadel(防御工事 工业 - 城塞)

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in R3 Capraia

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in ZU-23-2

in Technical Vehicles(老乡改装载具)

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in Local's CE Launchers

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in RimThunder - Desert Sabre(边缘雷霆 - 沙漠军刀)

in RimThunder - Way to Samurai(边缘雷霆 - 武士之路)

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in PBs 27x145mmMauser Autocannon Series(波兰球的27x145mm毛瑟机炮系列)

in PBs 27x145mmMauser Autocannon Series(波兰球的27x145mm毛瑟机炮系列)

in PBs 27x145mmMauser Autocannon Series(波兰球的27x145mm毛瑟机炮系列)

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In my opinion, the 30×113mmB stands out as a relatively cost-effective caliber among 30mm autocannons. Despite each round weighing only 0.49 units (with minor variations for certain ammunition types), it still delivers damage on par with other 30mm rounds, while being significantly cheaper to produce than high-power alternatives like the 30×165mm, 30×170mm, and 30×173mm NATO variants.

个人认为30x113mmB在30mm机炮口径中是一个相对经济实惠的口径，因为一发弹药仅有0.49重量和体积（部分弹药的重量会有轻微变化，但变化不大），却依然保持了30mm级别的毁伤效果，而且造价还低于30x165mm、30x170mm、30x173mmNATO这几个大威力30mm弹药。

in The Dead Man's Switch - Medium Caliber Multi-Purpose AutoCannon

in Paramount Combat Armaments(PCA武器包)

in Paramount Combat Armaments(PCA武器包)

in Ancient amorphous threat(远古无定型威胁)

in GTek's Vehicles - Oshkosh L-ATV

in Defensive Machine Gun Turret Pack

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in The Dead Man's Switch(失能机关)

in Fortifications - Industrial

in Fortification Industrial - Citadel

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If your research indicates 40×364mmR, that's actually the same ammunition type - I'm not sure why Combat Extended uses a different designation here.

如果你查到的资料是40x364mmR，也是同一种弹药，我不清楚为什么CE这里又是另一个写法。

in Paramount Combat Armaments(PCA武器包)

in CV90 - A Combat Vehicle Mod

in RimThunder - Flashpoint(边缘雷霆 - 闪点)

in BillDoor's Much More Turrets

in Local's CE Turrets and Sentries

in Pom Pom Turret

Since the author lacks in-depth military knowledge and doesn't frequently play with Combat Extended, he opted not to implement historically accurate ammunition for the "Pom-Pom" gun, instead directly repurposing the 40×365mm rounds from the Bofors L/70. The actual caliber of the pom-pom gun should be 40x158mmR.

由于砰砰炮的作者缺少一定的军事常识且不怎么玩CE，所以他懒得写砰砰炮的真实口径弹药，而是直接套用了博福斯L/70的40x365mm弹药。砰砰炮的实际口径应该为40x158mmR。

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in RimThunder - Torrent Pioneer(边缘雷霆 - 洪流先锋)

in The Dead Man's Switch - MobileDragoon(失能机关 - 机动龙骑)

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in Paramount Combat Armaments(PCA武器包)

in Turret Collection(unofficial)(炮台合集)

The Turret Collection mod has enhanced the projectile data of CE's default 57×438mm Bofors ammunition.

需要注意的是Turret Collection对CE自带的57x438mm博福斯弹药的投射物数据做了加强处理。

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in The Dead Man's Switch(失能机关)

The Dawn Blade is available in both handheld weapon and fixed turret configurations.
黎明之刃既有手持武器也有固定炮塔。

Dragoon Module Version for Dawn Blade(龙骑兵模块武器版本的黎明之刃)

in The Dead Man's Switch - Motorized(失能机关 - 摩托化)

in RimThunder - Cold Front(边缘雷霆 - 冷锋将至)

in RimThunder - Talvisota(边缘雷霆 - 冬季战争)

RimThunder - Project KV

in Fortifications - Industrial(防御工事 - 工业)

in Fortification Industrial - Citadel(防御工事 工业 - 城塞)

in Crimson - WW2 Soviet Defense(二战苏联防卫包)

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Combat Extended Armory

Local's CE Launchers

in CV90 - A Combat Vehicle Mod

in GTek's Vehicles - 2021 Ford F-150

in RimThunder - Northerngrad Lion(边缘雷霆 - 北境雄狮)

Due to logistical constraints, RimThunder does not supply authentic-caliber ammunition for the USH-405.
出于管理难度考虑，RimThunder没有提供USH-405的真实口径弹药。

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in Giant imperial turret

in Giant uranium slug turret

in RimThunder - Way to Samurai(边缘雷霆 - 武士之路)

in RimThunder - Northerngrad Lion(边缘雷霆 - 北境雄狮)

in RimThunder - Ardennes Assault(边缘雷霆 - 阿登突击)

Since the development team couldn't be bothered to create dedicated 88mm ammunition for the Tiger tank, they simply reused American 90mm rounds for the Tiger Ausf.E.

因为制作组懒得制作虎式的88mm弹药，所以直接套用了美国90mm弹药给虎式坦克E型。
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in RimThunder - Red Cavalry(边缘雷霆 - 赤骑)

in Crimson - WW2 Soviet Defense(二战苏联防卫包)

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in R3 Capraia

in Fortifications - Industrial(防御工事 - 工业)

The 105x607mmR recoilless gun in AOBA's Fortifications-Industry Mod currently has a firing arc limited to one hemisphere, and AOBA hasn't had time to fix this yet.

需要注意的是AOBA的防御工事-工业Mod中的105x607mmR无后坐力炮存在射界只有一个半球的问题，而且AOBA暂时没空修复。

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The 105×617mmR ammunition is compatible with 105mm L7 rifled guns and their derivatives.
105x617mmR弹药可用于105mmL7线膛炮及其衍生物。

in RimThunder - Red Cavalry(边缘雷霆 - 红龙)

in RimThunder - Dragon Ascend(边缘雷霆 - 云起龙骧)

in RimThunder - Way to Samurai(边缘雷霆 - 武士之路)

in RimThunder - Northerngrad Lion(边缘雷霆 - 北境雄狮)

in RimThunder - Roaring Tiger(边缘雷霆 - 雷鸣虎啸)

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in The Dead Man's Switch - Rh120-D TankCannon (失能机关 - Rh120-D 坦克炮)

in The Dead Man's Switch - Motorized(失能机关 - 摩托化)

in RimThunder - Apocalypse(边缘雷霆 - 审判日)

in RimThunder - Roaring Tiger(边缘雷霆 - 雷鸣虎啸)

in RimThunder - Desert Sabre(边缘雷霆 - 沙漠军刀)

in Object 279 for RimWorld

Since the author doesn't really play with Combat Extended (CE), he didn't create dedicated 130mm ammunition for the Object 279. Instead, for convenience, he directly utilized existing NATO 120mm rounds.

由于作者不怎么玩CE所以他没有为279工程制作130mm弹药，而是贪方便直接使用了北约120mm弹药。

in Turret Collection(unofficial)

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in The Dead Man's Switch - AncientCorps(失能机关 - 古代军团)

in RimThunder - Breakthrough(边缘雷霆 - 石破天惊)

in RimThunder - Zarya(边缘雷霆 - 黎明将至)

in RimThunder - Dragon Ascend(边缘雷霆 - 云起龙骧)

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in RimThunder - Time Forward(边缘雷霆 - 时代前进)

in RimThunder - Zarya(边缘雷霆 - 黎明将至)

Due to coding limitations, the 9M133FM3 cannot be loaded into the 9M133 launcher from RimThunder - Mobile Infantry.
(由于代码层面的问题，9M133FM3不能用于装填边缘雷霆-机动步兵里面的9M133发射器)

Heads up: The "9M133" missile in The Dead Man's Switch - AncientCorps is actually Ukraine's "Stugna" system in lore—it simply coincidentally shares the same designation (9M133/Kornet) with the Russian ATGM.

注意了，失能机关 - 古代军团中的9M133实际上是乌克兰的"Stugna"导弹，只是世界观设定中的编号恰好也为"9M133"和"短号"。

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