Gunwerks (adg) or Perterson brass

I've shot both Peterson and adg for my creedmoor. Peterson has held up better. Adg only lasted 3 or 4 firings before I started getting leaks by my pockets. Peterson is running 10 firings and still going strong.
 
I have run adg 7mag brass havent had any primer pockets loosening yet. Shot some pretty stiff loads I would say. 70.5g retumbo 180 bergers. My buddy shoots Peterson in his 6.5 creedmoor small primers and it's held up well and very accurate loads with good speeds, over 2800 with 140eldms.
 
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