Chris I think your worrying about nothing in this case. IF another primer should slam fire and that is unlikely the rest won't follow and empty the magazine. As I said in the case I had there was only the one sensitive primer in the whole bunch. It's not something that makes the whole lot bad. Just one out of millions that gets a little bit too much compound in it or the cup is too thin when it was made. As long as your cases have no high primers in them you should be good to go.