I have several automatic handguns and I want to polish their feed ramps.

I know how to break each gun down, so that's not the advise I need.

Can anyone tell me what to use and the steps that they take to do a good job of feed ramp polishing?

i.e. do you use a dremel tool or do it by hand - what grain wet / dry sand paper do you use (or do you use wet / dry sand paper at all)

Thanks in advance for your help.