The Challenger 1 and Chieftain use the 120mm L11A5 cannon. Challenger 2 uses the 120mm L30A1, which is more powerful.
L11A5 penetration values:
L15 APDS, 355mm @ 1000m, 305mm @ 2000m, 1965
L23 APFSDS, 450mm @ 2000m, 1984
L23 Jericho 1 is L23 with new charge, 1991 emergency measure
XL26E1 Jericho 2 is L26 round from L30A1 with lower pressure round, ~550mm, also a round rushed into service in 1991
Not sure where I got these from, probably Tanknet:
Chieftain:
Glacis
120mm@70° (350mm LOS), Hull Side 38mm + 15mm Aluminium, Turret Front
200mm@60deg, Turret Side
130mm@?deg
Chieftain with Stillbrew armour (1986 on):
Glacis
120mm@70° (350mm LOS), Hull Side 38mm + 15mm Aluminium, Turret Front 55cm KE, 73cm HEAT, Turret Side
130mm@?deg
Chieftain had the driver in a semi-reclining position, reducing the hull
height, enabling more armour to be piled on the front. Likewise the turret
has a large diametre turret with a massive slope
Figures from the 1980s have the Challenger 1 with 500mm against KE and 800mm against CE from the front. Some say these seem a little low, but of course no one can provide the real figures.....
What else do we need for these ones?
Might as well post the Stormer/Starstreak SAM as well.
PG