Thanks for the info guys! I think I will dispose of the the primers and trash the brass about 200 cases. It just didn't feel right when I was seating the primer and defiantly doesn't look right to me when compared to what I call normal. I'm not taking chances with these. I just haven't seen 357 brass look like this around the primer pocket. Of course I've only been reloading around 15 years and usually only buy new brass or use brass from my ammo purchases.

I learn something new everyday. I thought that the primer would push out farther when the cartridge was loaded. I now understand that more pressure moves the case back to the breech and reseats the primer, makes sense.

The crimped primer comment has me thinking, although I've never seen a crimped primer.

I have never fired primer only before but this stuff did not look right. The one I call "normal", far right in this photo, doesn't appear to have moved at all.