20 MM CALIBRE CARTRIDGES

 

 METRIC DESIGNATION

 RIM DIAMETER

NATIONALITY 

 PROJECTILE

 VELOCITY

NAME / WEAPONS  

20 x 70 RB

20.2

D

AP / 130

490

WW1 Becker, 1930s Oerlikon F

20 x 70 RB (E)

21.0

D

?

670

WW1 Ehrhardt

20 x 72 RB

19.0

CH / J

HE / 128

600

1930s Oerlikon FF and SSG, Type 99-1

20 x 80 RB

19.0

D

HE / 92

700

WW2 Ikaria MG-FF/M

20 x 82

25.2

D

HE / 115

710

WW2 Mauser MG 151/20, Vektor GA-1

20 x 94

24.9

J

HEI / 79

730

WW2 Ho-103

20 x 99 R

25.2

SU

HE / 96

790

WW2 ShVAK, Berezin, Helenius rifle

20x100/101 RB

19.0

CH / J

HE / 128

675-750

1920s Oerlikon F, FFL, Type 99-2

20 x 102

29.5

USA

HEI / 102

1,030

1950s M39, M61, M197 GIAT 20M621

20 x 105 B

25.0

CH

AP / 140

730

1930s 'Short Solothurn', Lb 204, S18-100 AT rifle

20 x 105

25.0

D

HE / 134

750

WW2 Rheinmetall-Borsig MG 204

20 x 110 RB

21.9

CH

HE / 122

830

1930s Oerlikon F, S, SSG-36 AT rifle, Polsten

20 x 110

24.8

F / UK / USA

HE / 130

850-880

WW2 HS 404, Hispano, AN-M2, HS 804

20 x 110 (USN)

29.5

USA

HE / 110

1,010

1950s Mk 11, Mk 12

20 x 113 (B)

28.0

SF

HE / 156

830

1930s Lahti L-34 'boat gun'

20x 115 SR 29.0 F AP / 104 850-890 1918 Delaunay-Belleville AT MG

20 x 120

28.9

DK

HE / 126

840

1930s Madsen

20 x 120 RB

20.0

?

?

?

1930s Simonetta

20 x 122 32.3 F ? ? 1950s 5CG AA

20 x 125

28.5

J

HEI / 127

820

WW2 Type 97 AT rifle, Ho-1, Ho-3

20 x 126 30.2 USA finned ? c.1960s Davy Crockett spotter
20 x 126 B 33.2 F ? ? 1950s 5CG AA

20 x 128

32.0

CH

HE / 120

1,050

1950s Oerlikon KAA, Meroka CIWS

20 x 135 27.8 D ? ? WW2 Polte

20 x 135

32.0

D

HE / 112

1,050

WW2 Mauser MG 213C

20 x 138 RB 21.1 D ? ? WW2 project

20 x 138B

27.0

CH

HE / 119

900

1930s 'Long Solothurn', FlaK/KwK 30/38, Solothurn S18-1000/1100 and Lahti AT rifles

20 x 139 FMK

28.5

CH

HEI / 131

1,010

WW2 FMK / Flab Kan 38 (rim 2.6 mm thick)

20 x 139

28.5

CH

HE / 120

1,100

1950s HS 820, Oe KAD, Rh 202, 20M693, Vektor F2 (rim 3.5 mm thick)

20 x 142

33.4

J

HET / 132

950

WW2 Army Type 98 AA/AT

20 x 145 R

29.5

S

AP / 145

815

1930s Bofors m/40 AA/AT

20 x 158 33.4 J ? ? 1930s Army Type 94 AA
20 x 158 RB 30.4 USA HE / 104 1,150 1945+ T5 case for T33 aircraft gun

20 x 180 R

47.9

S

AP  /108

950

WW2 Carl Gustav m/42 recoilless AT rifle

HOME                                                 DATA TABLES HOME