It use to be illegal but that was changed a few years ago..
New Jersey State Police - Transportation and Use of Hollow Point Ammunition by Sportsmen
However I will say there are many stipulations that a LEO could arrest someone on. And I'm guessing perhaps since Mr. Aiken wasn't on his way to a range or hunting, they got him on that.
I lived there too and there isn't a day that don't go by since moving to Texas that I don't thank God I am where I am.
Still a felony to possess it until you can prove you were enroute. Which means you get arrested first in a lot of cases. Happens frequently enough to the point where people carry and follow route instructions from their home. I've had family friends get nailed because a few rounds were loose during a stop. There's no tolerance for guns, even out of state just passing through have issues, regardless of federal law. Cluster duck that state, is.
Sent from my EVO using Tapatalk 2