Eff no! No dremel.
And you also DON'T need it to shine like a mirror.
The angle built into the ramp is important, and not to be messed with. More-over, the edge, where the cradle meets the frame ramp (wait... is this a ramped or non-ramped barrel?), MUST be sharp, you do not want to round that edge over. Trust me, you do that, you're SOL for the most part.
The thing people need to understand is that the nose of the bullet does NOT actually ride up the ramp and into the chamber... it skips off of it, and glances into the chamber, so all you really need to do is remove any large horizontal machine marks... but it doesn't need to be a mirror.
Also, is this a steel frame?
Hush up Stan. soft wheel so NOT to change the angle, yes it skips but when it hists machine marks or Parkerizing it slows and that's your feed issue. I use a wool half inch pencil point wheel with jewelers rouge and have for years. Ask Keelty, Pitt and Croaker how well theirs work now....