.+1 on reaming the pocket. Don't forget about the flash hole either.
PS; primer pockets don't have to be perfectly cleanbut my favorite way to clean them is to use a pocket uniforming tool in a handheld drill takes about 2 seconds and has them sparkling.
ridgeway said:I use the same thing...works great.Travelor said:I use a Dewey Crocogator
https://www.deweyrods.com/cart/index.php?route=product/product&path=111_114&product_id=409
Best little tool I have found for cleaning primer pockets.