I haven't seen any split heads on AA 28's lately. What I have seen is that when I reload them, while they have good case mouth life, the hulls will often split along the side. STS . . . I'm a big Remington fan in both 20 and 12, but I've seen reloaded STS 28's where the hull has separated from the head. You know that right away if you're using a double when you pop out the empties (assuming you look at them). But I'd be REALLY cautious with reloaded STS 28's in a pump or auto.
Interesting about the Estate misfire. I reload way more Cheddite primers than anything else, and I can't recall any misfires.
