That's where I have deburred and chamfered, No ring inside. Will try the case in the gun. Clips on route to meThe mouth, shoulder and neck look great. Is there a raised ring near the case head, or an effect of the lighting?
If there's a ring, you're probably not FL sizing all the way through the stroke. You could try chambering it as a dummy round and see if it chambers, extracts and ejects properly, and even loads in a en bloc clip the way it should.