German friends use H-mantles in 9.3x62 or 74r and they work just like the 173 h-mantles do in 7mm, except just a bit bigger with a bit more energy. They absolutely flatten big wild boar, and they are used they both penetrate very well and then cause big damage to all the internal heart and lungs. The heart and lungs look they have been liquidised. They like them on driven hunts because they kill very quickly, and a boar is not going very far even if shot placement is not perfect.