They are designed to feed in pistols that choke on Hollow Points, they are decent feeders in most pistols but I don't like the fact that they lack in the penetration department. But if your pistol wont feed a decent Hollow Point then the PowRball is better then FMJ.
Most police departments left the 155gr loading as it did not meet the FBI spec for penetration and shed its jacket on some barrier impacts. I would select the same load in the 180gr loading as this is the proven police issue load but if the 155gr was all I could get then its better then many of the other retail choices out there.