OK here's the scoop on MA:
http://www.goal.org/misc/faq/powder.html
(1)?? Exemption: License, Registration, or Permit:? In accordance with the provisions of M.G.L. c. 148 § 13, the Board hereby prescribes the following quantities of explosive materials that shall be exempt from License, Registration, and Permit and may be kept, or stored in a building or other structure:
(a)?? Small Arms Ammunition
1.?? Not more than 10,000 rounds of rim fire ammunition.
2.?? Not more than 10,000 rounds of center fire ammunition.
3.?? Not more than 5,000 rounds of shotgun ammunition.
(b)?? Small Arms Ammunition Primers
1.?? Not more than 1,000 caps or other small arms primers.
(c)?? Smokeless Propellants
1.?? Not more than 16 pounds.
2.?? Persons under 18 years of age may not keep or store Smokeless Propellants.
3.?? Not more than two pounds of such propellant shall be stored in a multiple family dwelling or a building of public access.
(d)?? Black Powder
1.?? Not more than two pounds.
2.?? Persons under 18 years of age may not keep or store black powder.
(e)?? Exempt quantities of small arms ammunition, primers, smokeless propellants and black powder shall be stored in original containers and such containers shall be stored in a locked cabinet, closet or box when not in use.
(f)?? Special industrial explosive devices when in? quantities of less than 50 pounds net weight of explosives.
(2)?? Storage By Permit:? In accordance with the provisions of M.G.L. c. 148 § 13, the Board hereby prescribes the following quantities of explosive materials that shall be exempt from License, and Registration,? and may be kept, or stored in a building or other structure provided a permit has been obtained from the head of the local fire department;
(a)?? Small Arms Ammunition:? Private Use.? Small arms ammunition in amounts over that specified in 527 CMR 13.04(1), that do not exceed 100,000 total rounds at any one time, may be kept for private use provided none of the individual limitations listed below are exceeded.
1.?? 10,001 to 30,000 rounds of rim fire ammunition.
2.?? 10,001 to 50,000 rounds of center fire ammunition not to include shotgun ammunition.
3.?? 10,001 to 50,000 rounds of shotgun ammunition not to include center fire ammunition.
(b)?? Small Arms Ammunition:? Commercial Use.? Not to exceed 200,000 rounds in any combination.
(c)?? Small Arms Ammunition Primers: Private Use
Not to exceed 10,000? Small Arms Ammunition Primers.
(d)?? Small Arms Ammunition Primers: Commercial Use
Not to exceed 100,000? Small Arms Ammunition Primers.
(e)?? Smokeless Propellants: Private Use
1.?? Not to exceed 48? pounds Smokeless Propellants.
2.?? Persons under 18 years of age may not keep or store Smokeless Propellants.
3.?? The head of the local fire department may limit the quantity of smokeless propellants stored by permit to as low as two pounds if such propellant shall be stored in a multiple family dwelling or a building of public access.
(f)?? Smokeless Propellants: Commercial Use
Not to exceed 100? pounds smokeless propellant.
(g)?? Black Powder: Private Use
1.?? Not to exceed five pounds of black powder.
2.?? Persons under 18 years of age may not keep or store black powder.
3.?? The head of the local fire department may limit the quantity of black powder stored by permit to as low as two pounds if such black powder shall be stored in a multiple family dwelling or a building of public access.
:banghead: