There are no special transport rules for "other" firearms provided you use it for a lawful purpose. Treat them like a rifle or shotgun when transporting.
You don't have to give a legal reason for transporting it... but if you did its to make holes in paper.
I wish, but mom, dad and grandma are still in NJ. Other grandparents are still in NY. Wife’s whole family is in NJ. We are going to be coming back there on a regular basis for some time to come.
With all the craziness lately I’ve been rolling with my SBR in the truck with a 60rd drum. Usually a full size M&P or Shield as backup.