If you are talking about the factory ramp which on my gun was almost none existent than you can go a lot deeper for improved feeding.There was a slight but distinctive taper already in my chamber which is what I described as the ramp. I did not deepen that taper, just a very slight dulling or edge removal on both ends of the taper. I get what you are saying nonetheless.
I will recover some of my brass next time I shoot and see how it compares to your casings. Thanks! Bill