
Originally Posted by
PSS
Short answer is 50 lbs in a residence. Local restrictions need to be considered first. NFPA has guidelines for smokeless and black powder storage.
NFPA 495 IF your local or state adopts this as law.
Smokeless: Up to 20 lb.s if stored in original containers. Up to 50 lb.s if stored in original containers AND in a wooden box or cabinet with walls at least 1" thick.
Black Powder: Up to 20 lb.s if stored in original containers AND in a wooden box or cabinet having walls at least 1" thick.
Primers: 10,000