Search:

Hi Greenie.
I Just looking at your original photo more closely I can see a slight ring around the primer pocket of the cases in question.
You have set your swage too deep.
Have a read of this,...

Hi Greenie.
Yep it is safe to de-cap unfired primers. Have done hundreds over the years fixing reloading cock ups. Just run them back through the die.

What did you want more details on? Swaging...

Hi Greenie.
If it is a problem with the primers it could be one of the following.
1: Primers not seated deep enough due to not being pushed home when seating the primer. When the firing pin then...