All this bullet talk got me to playin' around yesterday with milk jugs filled with water... I know water isnt the best predictor of terminal performance.
I used a glock 19 with a 124 grain HST +P and a Glock 42 with 90 grain Gold dot
both penetrated 2 full gallon jugs and both were caught in the third... I have no doubt the Lehigh ammo wouldve gone further
here are the jugs after the 9mm, the the first jug almost split in two (hydrostatic shock?)... THE HST impact was dramatic as it sent water everywhere. the 380 was not as profound...
I have no pics of the 380 carnage, the jugs were not damaged near as severe.
the HST:
comparison of the two:
THE Gold dot expanded almost as wide. Obviously, this is in water so its not worth much. The HST had some sharp petals, the gold dot is bonded and was more of a smooth mushroom. It starts out weighing 34 grains less, so I felt like it performed great.