[Marcello]

"5) There is code in there for fuse failures for HEAT. HEAT pen will therefore be more variable than solid shot. Usually book value or lower - there is a very small chance of some overpen"

Fuse failure or some others failure in multicharge weapons I can understand.It is an excellent feature.But when testing ATGMs I have found a surprising high number of overpenetrations beyond the
HEAT penetration + warhead size formula.Improved TOWs should have 80 + 6 as maximum but I found many penetrations well in excess of 90.For curiosity sake is there any real world factor that could make an HEAT warhead perform better than standard?