I find the Winchester primers much easier to seat. I don't feel bad about really putting some muscle on the seating lever as they don't distort or do weird things. They simply seat fully and stay, even in some unmodified military cases. And I've never had issues with failure to fire.
I use mainly Federal in my competition rounds, but they need the primer pockets fully preped and require a lot more "
feel" during insertion. I've never set one off in the press, but several have been managed beyond recognition, to a point where the Quality Assurance Dept didn't consider them competition grade.
