The post in the hollowpoint cavity doesn't allow debris anywhere to go except to clog it. In testing, the 230gr Hydra-shok loading has demonstrated a failure to expand when using both single layer 100% cotton material and the IWBA 4-layer 14oz denim standard of 90% as one in ten rounds tested shows any type of expansion. Federal Hydra-Shok has shown to have less than reliable expansion in testing through 4-layer denim into calibrated ballistic gelatin.
Don't believe the wild claims made by gun magazines and the fictional "Stopping Power" books claiming '96% one-shot stops' using the .45 Hydra-Shok, because it's pure fantasy.
Although HS was state-of-the-art when it was introdued in 1988, advancements in the industry have surpassed this technology over ten years ago. Federal now offers their far superior HST lineup of ammunition that expands after encountering barriers and heavy clothing.
A forum community dedicated to Springfield Armory XD and XD-M series firearm owners and enthusiasts. Come join the discussion about optics, gunsmithing, styles, reviews, accessories, classifieds, and more!