after hit on photo mantlet was cracked, for repair you will need new mantlet, new gun cradle and 300 hours of work
i haven't seen any reports about 115mm APFSDS behind armour effect, but all wars near Israel have so much myths...
btw, L15A2 was used in this test, and maybe i will get something about L23A1, but not L23
Looks like WO 194/466. It is a nice report that is not only gives a hint about hit results but also about logistic asspect of recovery of damaged vehicle. Plus nice examples of FVRDE pictorial code in right upper corner.
Found something from Dec 1979 on XL23E1, labelled as "512 mm" (body? penetrator itself?), W-Ni-Cu, for gun with pressure of 26 tsi. There were also discussed few more rounds: W-Ni-Cu 512 mm (33 tsi, for MBT-80 gun); W-Ni-Fe and DU of 512 mm (26 and 33 tsi) and two W-Ni-Fe and DU of 650 mm (26 and 33 tsi).
XL23 programme (there is also known another designation, XL22, the most probably earlier) seems an offshot of trilateral gun trials. US shared some part of their APFSDS technology with UK; penetrator that "won" in 1976 shooting from L11 gun was US-orgin. W-Ni-Cu was firstly prefered because older APDS could be utilised.
Edited by Przezdzieblo, 14 June 2017 - 1446 PM.