I'm a fan of Extreme Shock ammo, particularly the "fang face" stuff (Mullins Ammunition, Clintwood, VA). Results are devastating, with no shoot-through/over-penetration. However, the stuff would not reliably feed in both my Kimbers (.45), Kahr (.40SW), the R9S, or my PPK/S and NAA Guardian (.380). I contacted Jeff Mullins (company pres.) about this, and he told me that they have reconfigured the shape of the bullet to make it less round-nosed and more elongated (more like ball ammo), and kindly invited me to return my unfired ammo (all calibers) to him for an exchange for the new stuff. Extreme Shock is expensive (+$1.00/per round), and I wanted to publish this excellent customer service in case any of the rest of Rohrbaugh owners might be interested in the ammo.