I've seen a few posts lately about cold blues and thought I'd post a few pictures of a shotgun I re-blued recently with Brownells Oxpho-Blue.
I got this gun from a CGN'er that was nice enought to pass along a cheap Rem. 870 shotgun that he bought from CRAFM.
It's one of the ex police or whatever guns that they were selling for around $150 total.
The receiver was quite worn, with scratches and some minor pitting but the internals look brand new and the ejector has been replaced leaving the rivets sticking out about 1/32" proud of the receiver.
This gun is a non magnum wingmaster but the new ejector is the same length (2 3/4") and has the same "12" stamped on it as the ejector in another Magnum 870 that I have, so I think it has been upgraded to magnum status.
I used a file to take down the rivets till they were close to flush and then I went to a large 220 diamond stone....
For the rounder surfaces I used some open mesh abrasive that plumbers use....It's quite agressive when new (around 180) but I had some used pieces that were worn and it worked well.
When ever I finished working one surface I lightly oiled it and moved on to the next.
I used the worn open mesh some more over the entire receiver working in a straight line front to back untill it looked like this.
Next I degreased the receiver with simple green and wiped it down with rubbing alcohol.
Wearing clean nitrol gloves I heated the metal with a heat gun till it was hot to the touch but not too hot and then applied the Oxpho-Blue creme with a cotton pad(makeup remover).
Let it sit for 5 minutes then buffed with a clean pad....
About 15 minutes later I reheated the metal and did a second application.
I'm quite happy with the colour and consistency of the finish!
The 20" barrel was in very good shape and only needed some spot touch up on a few small scratches.
The allum trigger gaurd had dents and scratches that I smoothed out with the open mesh abrasive and then touched up with some tremclad I had.
Here's a final shot of the gun re assembled with new plastic.
I got this gun from a CGN'er that was nice enought to pass along a cheap Rem. 870 shotgun that he bought from CRAFM.
It's one of the ex police or whatever guns that they were selling for around $150 total.
The receiver was quite worn, with scratches and some minor pitting but the internals look brand new and the ejector has been replaced leaving the rivets sticking out about 1/32" proud of the receiver.
This gun is a non magnum wingmaster but the new ejector is the same length (2 3/4") and has the same "12" stamped on it as the ejector in another Magnum 870 that I have, so I think it has been upgraded to magnum status.


I used a file to take down the rivets till they were close to flush and then I went to a large 220 diamond stone....

For the rounder surfaces I used some open mesh abrasive that plumbers use....It's quite agressive when new (around 180) but I had some used pieces that were worn and it worked well.
When ever I finished working one surface I lightly oiled it and moved on to the next.

I used the worn open mesh some more over the entire receiver working in a straight line front to back untill it looked like this.

Next I degreased the receiver with simple green and wiped it down with rubbing alcohol.
Wearing clean nitrol gloves I heated the metal with a heat gun till it was hot to the touch but not too hot and then applied the Oxpho-Blue creme with a cotton pad(makeup remover).
Let it sit for 5 minutes then buffed with a clean pad....
About 15 minutes later I reheated the metal and did a second application.

I'm quite happy with the colour and consistency of the finish!
The 20" barrel was in very good shape and only needed some spot touch up on a few small scratches.
The allum trigger gaurd had dents and scratches that I smoothed out with the open mesh abrasive and then touched up with some tremclad I had.
Here's a final shot of the gun re assembled with new plastic.

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