Not only are primers high explosive, they are a primary explosive, having low energy threshold to initiate the reaction.Say he had a few thousand primers in the area, don't primers explode (they do contain a small amount of high explosives) and won't they go off in mass more or less spontaneously? Add 6 pounds of smokeless powder to that and whatever other things he may have had around, like possibly black powder, and I wonder if it all could go kaboom. Just wondering.
One or two folks pointed out there was no mention of gas in the article. Well, there was no mention of an ignition source either but something ignited it. So, no mention of them does not necessarily mean gas or an ignition source definitely were not in the picture. The firefighter or whichever authority quoted the homeowner was restating what he told them. Then a reporter from the media quoted it - all of a sudden some of you seem to be taking the word of the media as gospel! My guess is there might be a bit more information that will be revealed after an follow-up investigation - if not by the fire department then by the insurance company. Then again, there may have been something else that was explosive in the area where he was reloading, my guess is the garage from the scant info given in the article about the garage door being blown across the street and from photos showing what certainly looks like the remains of a garage. That might also come out after an investigation and I would guess with some certainty that, if the house really is a total loss, the insurance company will do an investigation.
As for someone mentioning watching a burn off of ammo where firefighters nearby were not injured - that was ammo already loaded into individual cartridges - was it not? That is very different than unloaded: smokeless powder, black powder or primers.
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