I'd make some calls before you head into MA or NY. Especially with Hi-Caps.
Below is from the NRA-ILA Federal Gun Laws page (
http://www.nraila.org/GunLaws/FederalGunLaws.aspx?ID=59).
MASSACHUSETTS--Nonresidents are allowed to bring personally-owned handguns into the Commonwealth for competition, exhibition or hunting. If the handgun is for hunting, a valid hunting license must be procured. Furthermore, the handgun owner must have a valid carry permit from another state and that state's permit requirements must be as stringent as those of Massachusetts.
A person who does not meet these requirements must obtain a temporary handgun permit from the Dept. of Public Safety, 1010 Commonwealth Ave., Boston, MA 02215.
Caution--Massachusetts has enacted one of the most restrictive gun laws in the nation, imposing a mandatory one-year jail sentence for anyone illegally possessing a firearm, loaded or unloaded, "on his person or under his control in a vehicle." In all cases, all firearms must be transported as prescribed in the general rule.
BOSTON--Under a vague law, it is
unlawful to possess, display, transfer or receive any shotgun with a capacity exceeding six rounds; a semi-automatic rifle with a magazine exceeding 10 rounds; any SKS, AK47, Uzi, AR-15, Steyr AUG, FN-FAL, or FN-FNC rifle; any semi-automatic pistol which is a modification of a proscribed rifle or shotgun; and
any magazine or belt that holds more than 10 rounds. An "assault weapons roster board" may add additional firearms to the list of "assault weapons." For owners to continue possession of such firearms, a license/registration must have been obtained from the Boston Police Commissioner within 90 days of the effective date of the law (12/ 9/89) or within 90 days of the addition of a firearm to a roster of "assault weapons." Otherwise a license/registration cannot be obtained.
The provision does not apply to possession by nonresidents of Boston at a sporting or shooting club, by a person with a Massachusetts license to carry a pistol, or while taking part in competition or at a collectors' exhibit or meeting or traveling to or from such event or while in transit through Boston for the purpose of hunting by licensed hunters, provided that in all cases the "assault weapon" is unloaded and packaged and the person has a Massachusetts Firearm Identification Card or has a license or permit to carry or possess firearms issued by another state. Prospective travelers are urged to contact the Massachusetts Firearms Records Bureau at (617)660-4780 or the State Police at
www.mass.gov/msp/firearms/ for further information.
NEW YORK--
The transportation of handguns is prohibited except by a resident with a license to carry.
A member or coach of an accredited college or university target pistol team may transport a handgun into or through New York to participate in a collegiate, Olympic or target pistol shooting competition provided that the handgun is unloaded and carried in a separate locked container.
Nonresident target shooters may enter or pass through New York State with handguns for purposes of any NRA-approved competition if the competitor has in his possession a copy of the match program, proof of entry and a pistol license or firearms registration card from his state of residence. The handgun must be unloaded and transported in a fully opaque container.
New York State has strict laws governing illegal possession of handguns which can result in a possible seven-year jail sentence for offenders.
Caution--New York law presumes that an individual stopped in possession of five or more handguns, without a state permit, possesses the handguns for illegal sale, thus subjecting this person to an increased sentence.
Caution--
New York is the only state that prohibits the transportation of handguns without a license. Travelers should therefore be particularly careful since they face severe consequences should they inadvertently violate the state's highly restrictive statutes.
NEW YORK CITY--A city permit is required for possession and transportation of handguns and long guns. New York State handgun permits are invalid within the city limits; however, New York State residents may transport their licensed handguns unloaded through the city if these are locked in a container and the trip is continuous. Long guns may be kept in the city for only 24 hours while in transit and must be unloaded and stored in a locked container or vehicle trunk for the period.
New York City forbids possession of an "assault weapon," which includes various specified semi automatic rifles and shotguns, or revolving cylinder shotguns. It is unlawful to possess an "ammunition feeding device" capable of holding more than 17 rounds in a handgun, or more than 5 rounds in a rifle or shotgun.
In all cases, the general rule should be observed. The New York State law on illegal possession applies to the City as well.
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