A Massachusetts resident must have a valid firearms license to possess ammunition. There’s a twist… Massachusetts General Laws Chapter 140 Section 122 defines ammunition as:
“cartridges or cartridge cases, primers (igniter), bullets or propellant powder designed for use in any firearm, rifle or shotgun”
In other words, you must have a firearms license to even possess an ammunition component.
Massachusetts residents that are at least 18 years of age and possess an LTC or FID can store 9,999 primers. A duly licensed resident is no longer required to pay for the “powder storage permit” to lawfully store more than 999 primers. We are reminded that ammunition, propellants, powders and primers “shall be stored in original containers and such containers shall be stored in a locked cabinet, closet or box when not in use”.