Gentlemen,
Last year I had the dubious privelege (?) of visiting Ontario, Canada, and seeing several gun shows. They were all pretty small by US standards.
At one show, the organizer/sponsor got on the P.A. system and asked for public donations to a legal defense fund for one of their own. A part-time hobbyist-gunsmith-collector was being hammered by the legal system, and it was pointed out that it could be any one of us!
This fellow repaired guns out of his house/garage, and did ammo reloading and collecting, like most of us do. He had no criminal record. Problem was, he had a house fire, and when the firemen arrived, they refused to approach the house becasue of all the small arms ammo exploding, punctuated by the BOOM! of power cans torching off. They simply backed off and let it burn!
The house burned down, along with more than 100 guns of every description. To make things even worse, the insurance company voided his homeowner's insurance because he had no gunsmithing license, most of the guns were customer's and friends, and his thousands of rounds of ammunition and who-knows-how-many cans of powder, thousands of primers, etc.
Now the Ontario lega system steps in. The gun owner is charged with federal felonies for possessing unregistered firearms, recklessly endangering fire and police personnel, gunsmithing without a license, and hoarding tens of thousands of rounds of ammunition and components. His legal fees were in excess of CDN$40,000 six months after the incident, and it hadn't even gone to trial yet! It was a total nightmare and disaster for the man.
I guess the moral of the story is that it really COULD happen to any one of us, and it might be a good idea to check into the legalities of storing large quantities of ammo and components.
John