I have heard stories of rather common items being described in official reports as "bombs". Such things as vinegar and baking soda in close proximity to a 2 liter soft drink bottle. Since the soft drink bottles can take up to 300 psi in certain circumstances, it could build up some rather impressive pressure before failure of the pressure vessel, and might actually damage or at least scare someone, I would hardly call it a "home made bomb" especially if it was not even constructed as something that would actually perform as feared, but such has been officially described at least once.

My point is that from the article, I can not tell if the bomb was actually constructed, or more like parts, or just his containers of smokeless powder for reloading, stored all too close to primers, or just in the same building. I have to grant that I do not know for sure that there were not pipebombs or other obviously functional thingies found that I would hate to have in close proximity to any children if at all avoidable, but the description is just vague enough to sound like the truth was being stretched yet again, at least to some extent.