Originally Posted by AZShooter
I encountered this with Norma brass twice and Nosler brass once. I now use a RCBS primer pocket uniformer with a chordless drill and a tiny bit of water as a lubricant. Also make several cuts brushing off cutter with each cut.
I agree with AZ, I have seen this before, and the cutter is the cure. I use a Sinclair pocket unifomer, and it works great. That's unusual for Norma brass though. One other thing you will notice about Norma brass, is that if you use a flashole reamer, you will get a little resistance with the pilot, as the factory hole is much smaller then the domestic brass is. I meant to say flash hole deburring tool, rather then reamer.
It could be that the pocket bottoms are just rounded on the edges, so the uniforming tool may only do a partial cut. As AZ said, clean it frequently when doing the cut.