CALIBRE GROUPS

Cartridges for (mostly) automatic weapons between (mostly) 12.7 and 57mm


PRINCIPAL HEAVY MACHINE GUN CARTRIDGES

   In approximate order of appearance: 12.7x99 (.50" Browning), 12.7x81 (.5" Vickers V/580), 12.7x81SR (.5" Vickers V/565, 12.7mm Scotti, Breda-SAFAT, IJA Ho-103), 13.2x99 (Hotchkiss M30, Breda M1931, FN Browning, IJN Type 93/Type 3), 13.2x96 (Hotchkiss M35), 12.7x108 (Russian; also Chinese HMGs), 15x104 (Czech vz/60, aka British Besa), 15x96 (German Mauser MG 151), 13x64B (German MG 131, IJN Type 2), 14.5x114 (Russian KPV).

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EXPERIMENTAL & LIMITED SERVICE HEAVY MACHINE GUN CARTRIDGES

12.7x99 (for scale), 12.7x110 (.50 North or Colt-Kynoch), 13.2x92SR (the original German TuF Maxim HMG of 1918, of which c. 24 were built), 12.7x120SR (Vickers Class D HV, saw very limited use), 12.7X108R (ShVAK HMG: few were made before it was converted to 20mm), 13.9x99B (.55 Boys ATR round - proposed for Rolls-Royce aircraft MG), 15.2x114 (US .60" T17), 12.7x114 (US .50/60"), 12.7x120 (US .50" HV - from 20mm HS.404 case),  16x99 (US 16mm Vega exp), 13x64 (exp rimless version of MG 131), 7.92x82B (exp necked-down MG 131), 13x77B (replica exp HV MG 131), 15x69B case (exp necked-up MG 131), 13x92B (exp MG 215/13), 15x83B (exp MG 215/15), 15x115 (postwar FN BRG; early pattern based on HS.404 case), 15.5x106 (FN BRG late pattern - based on KPV case)

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EXOTIC EXPERIMENTAL HMG CARTRIDGES 

12.7mm Hughes Lockless (sectioned, to show telescoped layout), .50 ARES TARG (telescoped, plastic case: this project was recently revived), .50 TROUND (for open-chamber gun), 12.7x99 (for scale)

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20mm CANNON CARTRIDGES TO 1945 PART ONE  

20x70RB (Becker), 20x72RB (Oerlikon FF - aka IJN Type 99-1), 20x80RB (German MG-FF/M), 20x82 (Mauser MG 151/20), 20x94 (IJA Ho-5), 20x99R (ShVAK), 20x101RB (Oerlikon FFL- aka IJN Type 99-2), 20x105B (Solothurn S18-350), 20x105 (German MG 204), 20x110RB (Oerlikon FFS and HS.7, H.S.9 variants), 20x110 (HS.404 - Hispano)

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20mm CANNON CARTRIDGES TO 1945 PART TWO  

20x110 (HS.404), 20x113 (Lahti L34), 20x120 (Madsen), 20x125 (IJA Type 97; and Ho-1, Ho-3 a/c guns), 20x138B ('Long Solothurn' used in FlaK/KwK 30 and 38), 20x139 (Swiss FMK: drill), 20x142 (IJA Type 98), 20x144R (Bofors m/32)

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20mm CANNON CARTRIDGES AFTER 1945   

20x110 (HS.404: Swiss API), 20x102 (US M39 and M61 Vulcan, GIAT 20M621), 20x110 USN (Mark 11 and 12 aircraft guns), 20x128 (Oerlikon KAA, also used in Meroka CIWS), 20x139 (HS 820 - now called Oerlikon KAD - M139 in US service - and also used in Rh 202, GIAT 20M693 / Vektor GI-2), 20x82 (Vektor GA-1: the MG 151/20, still in production!)

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20mm EXPERIMENTAL CARTRIDGES 

AMENDED 29 DEC 16

20x72RB(E) (WW1 Ehrhard), 20x115SR Delauney-Belleville (WW1 French anti-tank, repA), 20x120RB case Simonetta (1930s), 20x135 Polte (German pre-WW2: repC),  20x138RB (German WW2 unknown: repC),  20x135 Mauser MG 213C (WW2), 20x136B (Aden, repP), 20x158RB (US T5, for post-WW2 T33 aircraft gun), 20x126B (post-WW2 French AA 5CG series - used German projectiles), 20x122 case (post-WW2 French AA 5CG series), 20x167 Madsen HV (1950s, repP), 20x137 (necked-down 25x137, provenance unknown)

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23-28mm CARTRIDGES TO 1945   

AMENDED 10 JULY 13

25x87R Vickers Terni (WW1), 25x87 Revelli FIAT (WW1 aircraft), 23x106 (Madsen aircraft), 25x205R (Bofors for land and naval AA gun), 25x163 (French Hotchkiss for auto AA gun - aka IJN Type 96), 25x189 (Vickers 25.4mm naval AA), 28x199SR (USN 1.1" AA, repP), 24x138 (Swiss Pzw.Kan 38),  23x152B (Russian VYa), 23x115 Russian (NS-23)

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23-28mm CARTRIDGES SINCE 1945   

AMENDED 16 DECEMBER 11

23x115 Russian (NR-23 AM-23, GSh-23, GSh-6-23), 23x152B (Russian ZSU), 25x137 (Oerlikon KBA: NATO standard also used in M242 Bushmaster Chain Gun, GAU-12/U, GAU-22/A, GIAT 25M811), 25x184 (Oerlikon KBB), 25x183B (Chinese Type 95 AA, repA), 25x218 (Russian Navy: earlier M1940 version used a slightly different, 25x218R, case developed from the Bofors), 27x145B (Mauser BK 27), 27x173 (current Mauser SCORE sub-calibre tank gun training round)

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23-27.5mm EXPERIMENTAL CARTRIDGES   

AMENDED 29 DEC 2016

22x138B German C30 (repA), 23x138B German WW2 (repA)  23x146SR US Cal. .90 inch T1, 23x139RB US Cal. .90 inch T2, 23x139SR US Cal. .90 inch T3, 23x139SR  US Cal .90 inch, T4, 23x122 HS.406/407 (French aircraft gun 1940), 23x139 HS 823 (1950s Hispano), 23x132 HS 827 (1960s Hispano), 27x70B (for 1950s large-calibre Vulcan M61 variant, 27x96B also exists), 25x116B Oerlikon 251/25 RK (1960s aircraft gun), 26x130 Colt (1960s AFV gun), 27.5x140 Bushmaster (US AFV), 27.5x158 Bushmaster (US AFV)

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30mm CARTRIDGES PART ONE  

AMENDED 10 JULY 13

30x184B (MK 101/103), 30x90RB (MK 108), 30x92RB ( IJN 30mm Type 2, repA), 30x122 (IJN 30mm Type 5, repA), 30x114 (IJA Ho-155, repA), 30x86B (Aden LV: almost identical to the 30x85B for the Mauser MK 213), 30x97B (DEFA 540 series), 30x113B (Aden - brass-cased, DEFA 550 series - steel-cased, M230 Chain Gun - light alloy cased), 30x155B (Russian NR-30, Chinese 30mm Type 1)

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30mm CARTRIDGES PART TWO  

AMENDED 10 JULY 13

30x210 (Czech M53), 30x210B (Russian naval NN-30, Romanian A436, Zastava M86/89), 30x170 (Rarden and early Oerlikon KCB with brass case), 30x170 (HS 831: now known as Oerlikon KCB), 30x173 (Oerlikon KCA), 30x173 (GAU-8/A: an alloy-cased and percussion-primed KCA, steel-cased version used in Bushmaster II / MK44, Mauser MK 30F), 30x165 (Russian: current all-purpose case, different versions used in naval, aircraft, army weapons - this one is aircraft), 30x150B (GIAT 30M791 for Rafale)

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30mm EXPERIMENTAL CARTRIDGES 

AMENDED 29 DEC 2016

30x91 MK 212 (Mauser WW2, repC), 30x85B MG 213/30 (Mauser WW2), 30x99B MK 255 (French post-WW2), 30x110B MK 253 (French post-WW2, repA), 30x110 WECOM (original), 30x100B WECOM / XM 140 (for Cheyenne helicopter, 30x126B T239 US 1950s (for T182 Aden-type aircraft revolver cannon), 30x120RB T268 (US 1950s, for T168 reverse-loading aircraft revolver cannon), 30x136 HS 825 (1950s aircraft gun), 30x136B (belted steel version of the HS 825 case),  30x138  HS 836 (1960s AFV, repA), 30x164 (Philco-Ford's rival to GAU-8/A)

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34-40mm CARTRIDGES FOR AUTOMATIC WEAPONS PART 1  

AMENDED 7 NOVEMBER 14

37x94R (Hotchkiss/Maxim 1Pr), 37x69R (Vickers Mk III aircraft), 37x101SR ("Sockelflak", German WW1), 37x123R (Vickers 1½ Pr, based on earlier Maxim case), 37x137R (USN Heavy 1Pr/MacLean cannon),  37x190 (British C.O.W. 1½ Pr, WW1-2), 40x158R (British 2 Pr No. 1 and Class S, WW1-2), 37x145R (US M4/M10 WW2 aircraft), 37x122R (IJA Ho-203, repP), 37x144 (IJA Ho-204, repA), 40mm caseless (IJA Ho-301, repA)

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34-40mm CARTRIDGES FOR AUTOMATIC WEAPONS PART 2

AMENDED 7 NOVEMBER 14

34x239 Flab Kan 38 (Swiss AA), 37x208 Hotchkiss (AA, repA), 37x223SR M1/M9 (US AA/ac), 37x230SR Breda (Italian AA, repA), 37x249R FlaK M42 (German navy AA, repA), 37x250R M39 (Russian AA),  37x296R Schneider Mle 1930 (AA, repA), 40x311R (Bofors L/60)
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34-40mm CARTRIDGES FOR AUTOMATIC WEAPONS PART 3

AMENDED 7 NOVEMBER 14

37x195 (Russian NS-37: WW2 aircraft), 37x155 (Russian N-37 1950s aircraft) 40x365R (Bofors L/70), 35x228 (Oerlikon KD series, Bushmaster III), 37x240 (Chinese naval Type 76, repA). Experimental:  40x255 (CTAI 40mm cased-telescoped),  40x165 (US Super 40 exp., early HE dummy), 40x180 (US Super 40 exp., late HE dummy)

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45-57mm CARTRIDGES FOR AUTOMATIC WEAPONS   

AMENDED 10 JULY 13

50x346B (German FlaK 41), 50x419R (BK 5, MK214A), 57x441R (6pr 7cwt Molins), 57x121R (IJA Ho-401, repP), 45x386SR (Russian Navy, repP), 57x230R (Bofors m/47 aircraft gun, repP), 57x438R (Bofors AA / naval), 57x347SR (Russian S60 and naval guns), 57x398 (Czech R10/PLK AA gun)

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37-55mm EXPERIMENTAL CARTRIDGES FOR AUTOMATIC WEAPONS

AMENDED 29 DECEMBER 16

37x218R Hotchkiss M1935 (naval AA, repA), 40x275RB 2Pr 75 cal (British naval WW2, repA), 34x291 Vickers Class T (naval AA, late 1940s, repA), 37x218 (US Vigilante 1950s AA system), 37x255 (US Vigilante 1950s AA system), 55x318 MK 318 (German ac, part combustible case/recoilless, repA) 42x348 (Oerlikon 421RK, British Red King 1950s AA, repA), 42x270 (British Red Queen 1950s AA)

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34-57mm EXPERIMENTAL CARTRIDGES FOR AUTOMATIC WEAPONS

AMENDED 29 DECEMBER 16

34x149 DWM (WW2 German ac, repP), 35x185 (Rheinmetall experimental AFV based on 25mm case, 1980s, repP), 35x173 (30x173 necked-up to take 35mm projectile: US Amron 1970s), 37x158B HS 606 (Hispano ac, repP), 45x186 NS-45 (Soviet ac, repA), 55x175RB (MK 112 ac, repA), 55x205RB MK 412 (Krupp WW2 German ac, repA), 57x165RB N-57 (Soviet ac, repA)

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47-60mm EXPERIMENTAL CARTRIDGES FOR AUTOMATIC WEAPONS   

AMENDED 29 DECEMBER 16

47x326R Vickers Class P (ac/AT), 47x428R Vickers 3½ pr (naval AA, repA), 50x330 (Supershot, necked-up 35x228, German 1980s, RepP), 50x355 501 MK (Oerlikon for USN, late 1950s, repA), 55x450B Gerät 58/MK 114 (German AA/ac, late-WW2, repA), 57x515R 6pr 6cwt (British AA, 1940s), 60x408R (IMI/OTO 1980s AFV) 

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