Keith,
The incident was a long time ago, but not that long, it was about in the mid 90s.This was about the same time some manufactures were having trouble with consistency in primer production. The primers had to be non-corrosive non-mercuric, but there is no way to say they were not unstable, for some reason. I can say it was factory ammo, since he wasn't a handloader( unusual in our crowd). I have seen primers seated upside down in factory ammo, and sideways in my handloads, and they didn't detonate, but he would have noticed that when he examined the shell case afterward. Something made it happen. I guess if you live long enough, you see a lot of things.
Mike
