I started a thread a few months ago about some problems I had with Wolf SRP and .223. This is the latest style, with the thicker cup and hotter primer. I was getting hang fires and misfires, and quite a few. Not coincidentally , this was the first batch of .223 ammo I'd ever reloaded 
My verdict, after getting a tumbler and different case lube, is that I'd contaminated my primers. I've shot at least a few hundred rounds since that first batch and experienced none of the problems I'd had previously.
I think also seating the primers with the ram in the press, not just the hand primer, didn't hurt, as there seemed to be some give.
I wish I could tell you I shot 1000 rounds and no problem, but who's got that kind of money?!? ;-)
Anyway, figured I'd post an update.

My verdict, after getting a tumbler and different case lube, is that I'd contaminated my primers. I've shot at least a few hundred rounds since that first batch and experienced none of the problems I'd had previously.
I think also seating the primers with the ram in the press, not just the hand primer, didn't hurt, as there seemed to be some give.
I wish I could tell you I shot 1000 rounds and no problem, but who's got that kind of money?!? ;-)
Anyway, figured I'd post an update.
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