I have seen multiple tests in which Hydra Shoks in 9mm have completely failed to expand, and behaved as FMJ. They are not as consistent as more modern designs. They *were* one of the better choices for many years, but they are not on par with Speer Gold Dots, Winchester PDX1s, or their younger siblings, the Federal HSTs.
Shot placement and penetration minimums should not be an issue, which is good. Those are the two most critical elements. Expansion is the question mark.
I also want to remind everyone that length of time spent carrying a round, whether it has been a week or 30 years, is not supporting evidence for performance. Real world data and gel testing are where we see how these function once they leave the muzzle.