https://mdsp.maryland.gov/firemarsh...blic Safety Article Title 11 - Explosives.pdf
5 lbs of smokeless and 5 lbs of black powder per dwelling, you'll have to look at the code to determine if your dwelling is in the restricted list (apartments, multi-family, etc.)
You can also pay the $150/year and do the manufacturer's license to store up to 499lbs.
https://mdsp.maryland.gov/firemarshal/Documents/DSP-SFMP 008 Explosive Manufacturing Application.pdf
No limit on primers.
5 lbs of smokeless and 5 lbs of black powder per dwelling, you'll have to look at the code to determine if your dwelling is in the restricted list (apartments, multi-family, etc.)
Here is an epiphany, I checked with the local FM and he brought up the laws as the link showed. The law states 5 lbs. in a dwelling so I asked what about out buildings, like sheds, garages not connected to the house or other permanent structures?
He just gave me the deer in the head light stare. He said well the law does not say you cannot store powders in those places or even provide a limit on the amount. Also, the licenses are for if a person is engaged in a business.
(a) In general.-
(1) An applicant for a license to engage in business as a manufacturer or
dealer, to possess explosives other than explosives for use in firearms,
or to possess explosives for use in firearms, and an applicant for a
blaster's permit shall:
So it looks like a work around.