OK a lot of questions are coming up on this:
Let me try and answer some of them..
Watch: the Pre-Treated Media it will be treated with Brass cleaner that can contain Ammonia..... I don't know how it will react with Steel....
Ask the folks at Midway if their media is pre-treated they know their products...

I used the RCBS brand fromula 1(walnut) and formula 2 (corn cob)
I don't know if you can skip the walnut shells it is kinda like asking if you could skip the 400-800 grit paper and just start with 1000 grit.. I did this first razor step, by cautious step, just to see what would happen..
The second razor is spinning right now and it started way worse off then the first. I used some 220 grit paper to loosen up the rust
(10 minutes) and tossed it in. I just checked it and it is coming clean..

Lets all keep each other updated on this thread as we learn together...