Ahhhh.... I love it when I'm right ( it happens so seldom). I've never had problems with W231, and WSP or CCI 500 primers with lead bullets out of my 6" 586. That said, it might be the batch of primers, or the plated bullet might have too much resistance for that powder charge in your barrel. I know I won't be using that combination, and think your wise for not going there again. I cringe at the thought of having to pound a bullet out of barrel. If anything, your frustration proved the point about the problem wth light loads and how to maintain consistant ignition. I'll have to tell the bullseye shooter who gave me that tip how wise he was (or that he was a dumb guy who got lucky).