[Franek Grabowski]

Well, the pal was quite clear in his recollections, It was a few years ago that I have corresponded, and in no position to check it back, but he was perfectly clear that they trained on a range and checked effects themselves, and were clearly told, that they cannot destroy a tank, but they can disable it for a critical period of time. This was not Normandy, it was later.
Normandy was the first campaign where RPs were massively used. Thus the weapon must have been perfected. Then obviously the statistics does not have information about tanks hit but not disabled. RPs were much more effective against softskin vehicles. Then there was a psy efffect as well. RP attack was scary and this took the toll.