0000 - Maybe; Simichrome - *NO*
Wet or dry, I have never applied any grade of steel wool to a blued surface and therefore have no opinion about what it does to its appearance. I can only guess. (LOL)
Regarding Simichrome, I *do* have an opinion: It has changed and is now more abrasive.
Once upon a time, I had an old tube of Simichrome, plus another of its competitor, Flitz. I got the Simichrome with some old bike parts in about 1985; I bought the Flitz in the early 1990s.
Fast-forward to 'present': Both tubes finally ran out, so I 'recently' got new ones.
NEITHER product is 'safe' for bluing. Maybe in past, but not anymore.
Don't ask me how I know. 
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Complete thread:
- minimizing rust freckles on old blued gun -
stonewalrus,
2013-06-17, 06:07
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- A friend's OMSBH recently 'crusted' in much the same way - FOG, 2013-06-17, 06:44
- Test this on an inconspicuous spot first. - Andrew, 2013-06-17, 07:19
- Before you do anything else... -
AaronB,
2013-06-17, 08:38
- This has worked for me . . . - Kentucky, 2013-06-17, 09:31
- I've got a couple of old - Paul, 2013-06-17, 09:00
- 0000 -
JLF,
2013-06-17, 11:44
- 0000 - Maybe; Simichrome - *NO* - FOG, 2013-06-17, 12:17
- minimizing rust freckles on old blued gun - Catoosa, 2013-06-17, 23:25
- The best there is... -
Madbo,
2013-06-18, 07:56
- Thanks! just ordered several. I am always on the lookout - stonewalrus, 2013-06-18, 11:22