I've been watching the progress and I'm looking forward to seeing the McMaster-Carr media on the slide.

I've also been watching BMCM's thread on fixing up a rough blast job on a 1006:

M1006 in for some spa treatment

Post #7 seems extremely relevant to your situation, and gives great advice on how to even up your frame's finish.

If you are after a brighter/shinier finish than the standard S&W finish, #13 glass bead media with lower pressure would be the way to go.

The lower 4006 in this picture was blasted with #13 (it might have been #9 - it was a long time ago), while it looks darker in the picture it is brighter/shinier in person.