21-29 MM CALIBRE CARTRIDGES

 

 METRIC DESIGNATION

 RIM DIAMETER

NATIONALITY 

 PROJECTILE

 VELOCITY

NAME / WEAPONS  

23 x 106

29.0

DK

HET / 175

725

1930s Madsen a/c

23 x 115

27.0

SU

HEI / 175

740

WW2 NS-23, NR-23, GSh-23, GSh-6-23 a/c

23 x 122

34.5

F

HE / 200

900

WW2 HS 406, 407 a/c

23 x 133

31.5

CH

HE / 160

1,050

1960s HS 827 afv

23 x 139 28 CH ? ? 1950s HS 823 AA

23 x 139 RB

24.0

USA

HE-T / 204

823

late 1930s .90" T2 a/c

23 x 139 SR

30.9

USA

HE-T / 204

823

late 1930s/WW2 .90" T3, T4 a/c, a/t

23 x 146 SR

43.5

USA

HE-T / 204

869

late 1930s .90" T1 a/c

23 x 152B

33.4

SU

HE / 185

900-970

WW2 VYa (brass) a/c, 1950s ZU (steel) AA

23 x 260

15.0

SU

HEI / 174

885

1960s Rikhter R-23 a/c

24 x 138

31.4

CH

AP / 225

900

Pzw.Kan 38, TB.41 Tankbüchse ATR

24 x 138 B 27.0 D ? ? WW2: necked-up 20 x 138 B
25 x 39 B 27 USA HEAB / ? ? XM25 current exp grenade
25 x 59 B 27 USA HEAB / 132 425 XM307 current exp grenade

25 x 87 R

31.5

UK

HE / 200

470

Vickers 1 inch, Vickers-Terni a/c, AA

25 x 87

30.2

I

HE / 200

440

FIAT Revelli M 1917 25.4 mm a/c

25 x 94 R

31.1

USA

AP / 206

470

19th C 1" Nordenfelt / 20th C Aiming Rifle

25 x 116 B

33.3

CH

HE / 165

1,040

1958-64 Oerlikon 251/25 RK a/c

25 x 137

38.0

CH / USA

HEI / 180

1,100

1970s Oe KBA, M242 Bushmaster, GAU-12/U, GAU-22/A, 25M811

25 x 152 40 USA HEI / 192 1,200 c.1970 GAU-7/A combustible case telescoped

25 x 163

42.6

F / J

HE / 250

900

WW2 Hotchkiss Mle 1938, Type 96 AA

25 x 174-180

38.0

CH

HE / 250

1,160

1980s Oerlikon KBB, KBD AA

25 x 178-183 B 40.0 PRC HEI / 250 1,050 1980s PG87 and PGZ95 army AA
25 x 189 34.8 UK HE / 260 914 1930s Vickers naval AA
25 x 187 R 42.0 S ? ? version of 25x205 for Bofors m/38

25 x 194 R

47.2

F

AP / 320

960

WW2 Hotchkiss Mle 1934 AT

25 x 205 R

42.0

S

HE / 250

850

1930s Bofors m/32 AA

25 x 218 R

40.0

SU

HE /280

900

WW2 M1940 AA

25 x 218

34.8

SU / PRC

HE / 288

900

1950s 2-M3, 2-M8 AA

26 x 130

36.0

USA

HE-T / 195

APT / 118

945

1,265

1960s Colt Bushmaster AFV

27 x 70 B 29.4 USA HE / 250 610 1950s T150 Vulcan a/c
27 x 96 B 29.4 USA HE / 200 840 1950s Vulcan a/c

27 x 145 B

34.0

D

HE / 260

1,025

1970s Mauser BK 27 a/c, naval

27 x 173 44.0 D/CH F / 255 1,180 1990s Mauser Score tank gun spotter

28 x 187 R

47.9

D

AP / 131

1,400

WW2 PzB 41 (Gerlich squeezebore: to 20 mm)

28 x 199 SR

43.5

USA

HE / 416

823

WW2 1.1" naval AA

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