Well I used a stone to debur the primer bar and the slot it rides in tonight. I also lubricated it with some Moly powder while it was out. I couldn't believe the difference. I only loaded 100 rounds and it didn't miss a primer once. The only things I'm now watching for are if the primer was extracted from the case and the amount of powder in the case before placing the bullet on top to seat. It is working rather well now. That was probably the easiest fix there is for a frustrating problem. I didn't do any polishing of parts just squaring things up by removing high spots. The 550B is a pretty good press and fairly easy to use.
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