9mm 115 gr JHP's have a problem, that is they tend to expand to quickly and then under penetrate, up the pressue levels to +P or +P+ and they tend to fragment and then under penetrate! Either way, they tend to under penetrate...
In my opinion they are just fine for home defense/ccw applications, if however you're a LEO, where barriers such as automobile windshields and doors are a very real obstacle, I think they are a very poor choice.
We now know conclusively that the 147 gr JHP's are at a minimum, no less effective then the hyper-fast lightweight, and middleweight 115, 124, & 127 gr +P, or +P+ loads actually are. In fact there is solid data emerging, gathered by real professionals that clearly establishes the superiority of heavier loads in 9mm...