I have polished the feed ramp on every auto I have, from the Colt Gold Cup to the Rohrbaugh R9s. A mirror finished feedramp is slicker than oil on ice, and aids greatly in feeding and reliability.
But I spent nine years working for an Aerospace contractor, doing assembly work, and deburring and polishing parts that were for the F-15s,
Sikorsky helicopters, even the space shuttle.
Using a felt buff on a Dremel with a polishing compound or jewelers rouge will not cut the metal (as stated by greenjeans) and can produce a mirror finish. DO NOT use anything more abrasive, no sand paper drums or cratex rubberized wheels.
If your at all uncomfortable or have second thoughts about doing it, Don't, take it to a qualified smith and pay for the piece of mind.