> Hopefully the effect is becoming obvious - by impacting the statistical armour and detonating at that point, the armour has given the RPG a free c.300+ mm of

> Hopefully the effect is becoming obvious - by impacting the statistical armour and detonating at that point, the armour has given the RPG a free c.300+ mm of free standoff extension. The armour just amplified the threat capability by a good 20%, making life worse for you inside that vehicle. For an APC with ~5cm of armour, pretty much any garden variety shaped charge will penetrate it with ease. If the chance of penetration is already 100% it doesn't matter if the charge is 20% stronger. But having the cage at least gives a small chance of stopping the charge from ever detonating. Different story with tanks though, where the extra 20% could mean the difference between a badly damaged hull and the complete destruction of both tank and crew.