Yes, you can drive through New Jersey with a NY handgun but you must be extremely careful to comply with proper transport laws. You must store the gun, unloaded, in a case, bag or other enclosure that is outside the passenger compartment. The ammunition should be contained in a separate compartment of the enclosure or elsewhere in the vehicle. Provided you have the weapon stored properly, you can transport it through New Jersey to another state where it would be legal to possess, for example, Virginia or Florida.
Home Can I Drive Through NJ With My NY Handgun?