Perhaps this rifle grenade deserves a quick review. It currently has a HEAT Pen of 2, but Hogg’s says it should be 50mm. I checked some online sources and almost all agree that it had a penetration of 50mm.
The No.68 weighed about 2lbs, and was apparently the heaviest WW2 rifle grenade, but a penetration of 50mm is still quite a bit less than some US, German and Japanese AT rifle grenades.
The No.68 rifle grenade is weapon 093 in the British OOB.