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  #1  
Old 10-21-2018, 07:08 PM
sechott sechott is online now
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What could cause brass discoloration?

I bought a Henry Big Boy 44 used about 2 years ago. The buttplate started discoloring just a small 1/2Ē spot and grew to this in a matter of months. The safe is humidity protected and the rifle sits muzzle pointing down. No other part of the rifle is discolored and the effective area cannot be felt even with a razor edge. Brasso will not remove it, and it did not keep it from growing.
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  #2  
Old 10-21-2018, 07:32 PM
DaveVK DaveVK is offline
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Anything that attacks Copper or pulls out Zinc. Some gun cleaners.

In my neck of the woods, many wells contain Hydrogen Suffide. That "rotten egg" smell in air works over time to corrode copper condenser coils, electrical connectors and turns pennies (mostly zinc) a nasty black.
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  #3  
Old 10-21-2018, 07:45 PM
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Scooter .45 Scooter .45 is offline
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Wouldn't hurt to contact Henry and ask the same question. If their customer service is as good as their literature suggests, ya never know. They might replace the buttplate or at least have an answer to remove the discoloration.
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  #4  
Old 10-21-2018, 08:02 PM
Dddrees Dddrees is offline
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Quote:
Originally Posted by Scooter .45 View Post
Wouldn't hurt to contact Henry and ask the same question. If their customer service is as good as their literature suggests, ya never know. They might replace the buttplate or at least have an answer to remove the discoloration.
This, and please let us know how it goes.
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Old 10-21-2018, 08:17 PM
sechott sechott is online now
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I’ve thought about contacting Henry, not sure they’ll help with it being used. Being that is the only part of the rifle that has the issue it could be alloy related.
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Old 10-21-2018, 08:21 PM
Dddrees Dddrees is offline
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Originally Posted by sechott View Post
I’ve thought about contacting Henry, not sure they’ll help with it being used. Being that is the only part of the rifle that has the issue it could be alloy related.
You never know until you ask. Might as well give it a go and see what they say. What’s the worst thing they could say?

Last edited by Dddrees; 10-21-2018 at 08:37 PM.
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  #7  
Old 10-21-2018, 08:21 PM
countrydraftsman countrydraftsman is offline
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I own a Henry Golden Boy .22, a couple of .36 black powder revolvers and also a .44-40 Uberti lever gun - all have a ton of brass to them. They ALWAYS get discolored with time (also stored in a safe), but a little elbow grease and metal polish has always brought things back to their original luster I agree with the other commenters about contacting Henry to determine a cause/solution if metal polish doesn't bring things back. Seems like more than oxidation going on if metal polish isn't cleaning things up. FWIW, I use "Mothers Mag and Aluminum" polish. Brasso might not have enough horse power to get the job done? I have never had good luck with that product personally.
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  #8  
Old 10-21-2018, 08:23 PM
quasimodo quasimodo is offline
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look to me like the lacquer sealant is coming off. most likely started around the screw holes.
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  #9  
Old 10-21-2018, 09:18 PM
sechott sechott is online now
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Quote:
Originally Posted by countrydraftsman View Post
I own a Henry Golden Boy .22, a couple of .36 black powder revolvers and also a .44-40 Uberti lever gun - all have a ton of brass to them. They ALWAYS get discolored with time (also stored in a safe), but a little elbow grease and metal polish has always brought things back to their original luster I agree with the other commenters about contacting Henry to determine a cause/solution if metal polish doesn't bring things back. Seems like more than oxidation going on if metal polish isn't cleaning things up. FWIW, I use "Mothers Mag and Aluminum" polish. Brasso might not have enough horse power to get the job done? I have never had good luck with that product personally.
Thanks, because you mentioned something stronger than Brasso. I remembered I had a tube of Autosol. I used a tiny dab and it cleaned right, up amazing.
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Old 10-21-2018, 09:26 PM
wildphil wildphil is offline
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Looks like new again. Nice!
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  #11  
Old 10-21-2018, 09:30 PM
WaterDR WaterDR is offline
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Looks like it could be galvanic corrosion. When stored, is the butt touching anything in the safe?

You should be able to rub it out with a polish. You may even be able to wet sand it. Then coat with lacquer.
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  #12  
Old 10-21-2018, 09:35 PM
sechott sechott is online now
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Originally Posted by WaterDR View Post
Looks like it could be galvanic corrosion. When stored, is the butt touching anything in the safe?

You should be able to rub it out with a polish. You may even be able to wet sand it. Then coat with lacquer.
Autosol did the trick but it did take bluing off the screw, so Iíll have to disassemble the brass pieces before I do any more.
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  #13  
Old 10-21-2018, 10:36 PM
191159 191159 is offline
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Flitz or neverdull will work just fine.
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Old 10-22-2018, 12:11 AM
subscriber subscriber is offline
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What causes brass to discolor? Sweat from your shoulder, perhaps.
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Old 10-22-2018, 05:28 AM
sechott sechott is online now
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What causes brass to discolor? Sweat from your shoulder, perhaps.
Could be, I thought more than just natural patina was going on. Since it wouldnít come off with Brasso and was the only brass part that dulled.
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  #16  
Old 10-22-2018, 06:39 AM
earlwb earlwb is offline
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Many gun safes have particle board liners covered with carpeting. Gasses like hydrogen sulfide ooze out of the stuff for decades. So you likely have something like that in your safe too. I would have assumed that you could polish it out though. Since Brasso doesn't polish it back up, contact Henry about it. It may be a defect in the brass alloy.
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  #17  
Old 10-22-2018, 07:33 AM
cecILL cecILL is offline
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A stupid question here. Why does the rifle sit "muzzle down"?
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  #18  
Old 10-22-2018, 08:03 AM
Chunker Chunker is offline
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Brass is going to discolor as time goes by and needs to be polished. Flitz is your friend and is good on SS as well. Since it has some abrasive stuff it will take blue off if you scrub it. Heck I use it on my aluminum mags on the bike. With just a little elbow grease things will come back to life. By the way nice rifle. I have the BB in .44 as well. Sweet shooting she is.

Last edited by Chunker; 10-22-2018 at 08:05 AM.
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  #19  
Old 10-22-2018, 08:25 AM
Red Dirt Dave Red Dirt Dave is offline
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as Chunker indicated, brass is brass - it will always discolor with time. Unless one applies a protective coating it will return.

Every one of my brass furnitured flint longrifles, both original and reproduction, has brass that darkened with age and exposure. It's just the fact of oxidation.

renaissance wax helps.

Nice rifle!
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  #20  
Old 10-22-2018, 10:03 AM
Gary Wells Gary Wells is offline
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The Brasso that came out in metal cans about 30 or so yrs back was great stuff. Definitely not to be confused with the crap coming out in plastic bottles now days. Wenol light blue works great on stuff also.
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  #21  
Old 10-22-2018, 10:14 AM
sechott sechott is online now
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Originally Posted by Gary Wells View Post
The Brasso that came out in metal cans about 30 or so yrs back was great stuff. Definitely not to be confused with the crap coming out in plastic bottles now days. Wenol light blue works great on stuff also.
I remember my dad had Brasso cotton swabs that came in a metal jar. That stuff was potent. Iím not sure if it came that way or if he just kept the swabs in the jar instead of throwing them away.
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Old 10-22-2018, 10:30 AM
magazineman magazineman is online now
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cecILL----------- Some folks keep guns muzzle-down to keep oils from soaking into the stock.

If you look at very old Winchester 94's, for example, the wood is usually darker near the receiver due to oil staining.

But I don't store upside down. That darkening effect looks "correct" for an old rifle in my opinion.
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  #23  
Old 10-22-2018, 12:08 PM
WalterGC WalterGC is offline
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Originally Posted by magazineman View Post
cecILL----------- Some folks keep guns muzzle-down to keep oils from soaking into the stock.

If you look at very old Winchester 94's, for example, the wood is usually darker near the receiver due to oil staining.

But I don't store upside down. That darkening effect looks "correct" for an old rifle in my opinion.
Does having a loose stock also look correct?
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  #24  
Old 10-22-2018, 12:47 PM
magazineman magazineman is online now
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My Model 94 from 1921 has the stains & is not loose.
My Model 92 from 1906, same thing.
My 9422 from 1977 has lighter staining, also no problem.

But yes, I'm sure some folks have had issues.
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  #25  
Old 10-22-2018, 03:39 PM
sechott sechott is online now
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I just keep it upside down because the first row in my gun rack is slotted for buttstocks. I mentioned how it set so others would not blame the safe.
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