Here's your New Jersey law:
2C:58-3.3. "Handgun ammunition" defined;
sale, purchase, etc., regulated; violation,
fourth degree crime
a. As used in this act, "handgun ammunition"
means ammunition specifically designed to be
used only in a handgun. "Handgun ammunition"
shall not include blank ammunition, air gun
pellets, flare gun ammunition, nail gun
ammunition, paint ball ammunition, or any nonfixed
ammunition.
b. No person shall sell, give, transfer, assign
or otherwise dispose of, or receive, purchase, or
otherwise acquire handgun ammunition unless
the purchaser, assignee, donee, receiver or
holder is licensed as a manufacturer,
wholesaler, or dealer under this chapter or is the
holder of and possesses a valid firearms
purchaser identification card, a valid copy of a
permit to purchase a handgun, or a valid permit
to carry a handgun and first exhibits such card
or permit to the seller, donor, transferor or
assignor.
c. No person shall sell, give, transfer, assign
or otherwise dispose of handgun ammunition to
a person who is under 21 years of age.
d. The provisions of this section shall not
apply to a collector of firearms or ammunition as
curios or relics who purchases, receives,
acquires, possesses, or transfers handgun
ammunition which is recognized as being
historical in nature or of historical significance.
e. A person who violates this section shall be
guilty of a crime of the fourth degree, except that
nothing contained herein shall be construed to
prohibit the sale, transfer, assignment or
disposition of handgun ammunition to or the
purchase, receipt or acceptance of ammunition
by a law enforcement agency or law
enforcement official for law enforcement
purposes.