bruce282 Posted February 17, 2008 Share Posted February 17, 2008 I was loading some 9mm on my 550b yesterday. After 100 rounds or so I put them in an ammo box to check for high or missing primers. In the last 100 rounds I did I noticed maybe 15 with small dimples in the new primers (WSP). I checked the primer feed cup and it appears clean. Any ideas? Bruce Link to comment Share on other sites More sharing options...
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