45 Auto was twice as effective as the 9mm. Today, .45 Auto fans swear this is the only study that matters. Between 1975 and 1985, the National Institute of Justice (NIJ) formulated the Relative ...

The best performing 9mm load was a +P+ 9mm 115-grain JHP. Ironically, it was a 115-grain 9mm hollow-point that failed the FBI in 1986 and launched their search for handgun stopping power Shangri-La.