for what its worth, ive fired fed. hydra shock 230 and fed/gold dot (same bullet) hst, through 3 gallons of water, a leather jacket and into a kevlar stop drop. far and away the hst opened like an octopus, the hydra shock collapsed. i know it aint perfect, but its perfect for me!!
they were fired from a sig p220, at 25 ft, and the leather jacket wrapped around the water jugs