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  #1  
Old 08-24-2009, 03:55 PM
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Heavy rust and pits, how to fix??


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OK, I have a barrel that is for a swap barrel gun, it has a 30/30 and 20Ga barrels that swap easily.

While I was away from home for a month, my sister and her boyfriend stayed at my place and moved my stuff all around, they just tossed this barrel on the floor into a corner and it looks like a mouse maybe PEE'd on it, it has very heavy rust and pits in the one spot, inside is still mirror bright.

I used a wirebrush on a bench grinder and removed everything down to bare metal, over 3 or 4 nights the one rust spot came right back just as heavy as it was, I recleaned it and then used hot water and soap on it, then several other kinds of cleaners, so far it is staying ok now, except for the pits.

What can be done to fill in the pits?
I will either reblue or maybe even chrome plate or something shiny anyway.

Here are 1 before cleaning pic and 2 after pics.








Michael Grace
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  #2  
Old 08-24-2009, 04:37 PM
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Sorry to say that that one is beyond economical repair.

Good news is; I know of one that is in worse shape.

What does the bore look like?

Cheezywan
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  #3  
Old 08-24-2009, 04:55 PM
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As Cheezy said, actually beyond economical repair. For people with too much time on their hands, there is a technique known as draw filing which could reduce but not eliminate pits as deep as those. Bead or abrasive blasting followed by something like Dura-Kote would hide the damage and pretty well stop any further rusting. Good luck! Goatwhiskers the Elder
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  #4  
Old 08-25-2009, 05:34 AM
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Quote:
Originally Posted by Cheezywan View Post
Sorry to say that that one is beyond economical repair.

Good news is; I know of one that is in worse shape.

What does the bore look like?

Cheezywan
Inside is still mirror bright, still shoots fine, just looks like CRAP.

Think it could maybe be fixed by using silver solder, or whatever is the higher temp tougher solder?

Just glad it was a pretty cheap gun and not a new expensive one.





I once bought a wall hanger 12Ga, 32 inch Full chock barrel, cracked stock that was screwed back together, the inside looked like the inside of a stove pipe that had been used all winter and never cleaned.
It was only $25.00 so I bought it, it took around 4 or so hours with a bore brush wrapped with steelwool spun by a drill, when it was all cleaned up it was mirror bright inside.
To test fire it, I took it outback and used rope to tie it to a post, loaded it with a heavy/fast load and fired it with a string from 50 feet away and around a corner, fired it 5 times. It worked fine and I started shooting it, used it off and on for over a year before I traded it off.

Michael Grace
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  #5  
Old 08-25-2009, 02:33 PM
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Cosmetically your best bet would be to file or turn the barrel to a lighter contour. Otherwise, a heavy bead blast and matte blue will help hide the pits.

If you fill them in with solder, epoxy, fiberglass, Bondo, or whatever, most finishes won't match or even take. Paint might work.
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  #6  
Old 08-26-2009, 01:26 AM
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I know of a guy that does metal stripping and he recently started a new service of coating and filling heavily damaged metal with a zinc-based material. I've seen some horrible and completely rusted through auto body parts come out looking like they were newly made. I don't know what kind of finishes will work over it, but these were done in paint or powder coating afterward. I would assume that gunkote, or dura coat would work. The guy is a friend-of-a-friend, and my friend is gone hunting for a couple of weeks. If I can remember, I'll post back here with the process name if I see the guy soon.
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  #7  
Old 08-30-2009, 06:22 PM
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your best bet is filling the pitting out, bead blasting will cover a lot but that is well beyond its abilities.
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  #8  
Old 08-30-2009, 07:07 PM
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Originally Posted by tjrahl View Post
your best bet is filling the pitting out, bead blasting will cover a lot but that is well beyond its abilities.
But what do I fill it in with?

Michael Grace
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  #9  
Old 08-31-2009, 04:18 PM
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Originally Posted by mgrace View Post
But what do I fill it in with?

Michael Grace
You dont, there is nothing you can fill those pits with that you can get a uniform blueed finish on, and if you paint it shame on you!
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  #10  
Old 01-08-2012, 03:26 AM
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I'm aware of that this topic has not been used for several years, but I'm having kind of the same problem (but a bit worse) with a very old bolt action (single shot) shotgun which was my grandfather's.
It was given to me after he passed and I don't really care for rust on guns.
The pitting is just as bad (or worse in places like the reciever).

What I'm worried about, it that when I will attempt to try and file down to the bare metal to get it reblued, the barrel will be too thin and the bolt wont lock up so nice .. any 2 cents?

Also, I have about 14 gallons of elbow grease here and spare time is no problem..

EDIT:

I've decided to go with desalting, electrolysis, scrubbing and refinishing with a really really fine emery cloth.

Last edited by Pj3r; 01-11-2012 at 02:00 PM. Reason: update
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