Rust on my M91/30


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Old 11-28-2012, 07:24 PM   #1
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Default Rust on my M91/30

3 weeks ago I picked up this beautiful 1932 hex Mosin and this weekend I took her out hunting and when I went to clean her Monday after school there was rust all over the mag, the receiver, and the bolt. is there anything I can do to stop it? I cleaned it up but its making spots on my gun.



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Old 11-28-2012, 07:26 PM   #2
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Did you use that surplus ammo with the "corrosive" primers? Did you clean it after every firing? Did you leave her a little oily when stored? You didn't store it in a zipped-up guncase, did you?



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Old 11-28-2012, 07:30 PM   #3
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I use a product called Sili Kroil and it is a very good penetrating oil with silicone that will actually break down rust and prevent it from coming back. You should give it a try.

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Old 11-28-2012, 07:47 PM   #4
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Quote:
Originally Posted by orangello View Post
Did you use that surplus ammo with the "corrosive" primers? Did you clean it after every firing? Did you leave her a little oily when stored? You didn't store it in a zipped-up guncase, did you?
I shot 2 corrosive bullets and about 3 winchester silvertips and I stored her in a zipped case after. Gave her some lube about a day before the trip it was snowing up north and she rode uncased strapped onto a 4 wheeler
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Old 11-28-2012, 07:53 PM   #5
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I shot 2 corrosive bullets and about 3 winchester silvertips and I stored her in a zipped case after. Gave her some lube about a day before the trip it was snowing up north and she rode uncased strapped onto a 4 wheeler
It is my understanding that fully zipped cases trap the moisture, as does the foam in those foam-lined cases. It would be better off in a cabinet. When using the old surplus ammo, it would be a good idea to clean that day and coat it with some pre-storage oil, even if it is just a hose-down with Remoil. It will wipe off easy enough when you are ready to go hunting/plinking/avalanche-freeing.

We don't get snow here much, but i doubt it helped.


I have heard that bear grease is an excellent rust preventative.
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Old 11-28-2012, 08:20 PM   #6
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I just don't want to have a ruined gun because she is very pretty and I want only the best for my girl :P

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Old 11-29-2012, 01:26 AM   #7
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Yes, the temp and moisture changes along with keeping it in the case will cause condensation and moisture issues and encourage rust. If you have to take it from cold to warm it should be uncased and then wiped down and dried off before it is put away, after it has come back to room temp in the house. Then a quick wipe with some oil.

After shooting corrosive ammo the bore needs to be hit with some hot water to remove the corrosive salts from the primers, then dried and oiled.

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Old 11-29-2012, 07:21 PM   #8
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Should my gun be ok function wise? I got rust on the part of the bolt where the back of the case touches it.

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Old 11-29-2012, 07:22 PM   #9
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I would want to remove the rust before using it, at least any internal rust. It probably wouldn't impair function, but why chance it.



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