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Old March 30, 2013, 01:51 PM   #1
Merad
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Mosin Nagant barrel rust, cause for concern?

Pic: http://i.imgur.com/mXoJYtO.jpg

This is a 1931 hex receiver M91/30 I got last week. Noticed this rust spot during cosmoline removal. I think the pic does make it look worse than it actually is - it's more of raised area where oxidation has occurred rather than pitting down into the barrel. Is it bad enough to need checking by a gunsmith?
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Old March 30, 2013, 01:54 PM   #2
the rifleer
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I don't think its bad, just use some oil and steel wool to remove it and prevent it from getting worse. You have to pit a barrel very bad to make it dangerous to fire.
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Old March 30, 2013, 02:59 PM   #3
handlerer2
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Looks like a little dandruff. Just treat it and keep oiled.
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Old March 30, 2013, 03:33 PM   #4
SIGSHR
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Yes, steel wool and oil, obviously a spot where some moisture was trapped between the barrel and the stock.
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Old March 30, 2013, 05:19 PM   #5
Unclenick
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For reference, Page 202 of Hatcher's Notebook has a picture of a Springfield '03 barrel that he turned down to a wall thickness of 1/16" over the end of the chamber that fired three service rounds without blowing it up. He then put in a proof round, and that burst it. So that rust would have to eat pretty far in to cause a safety issue. Nonetheless, it's best to get it all out and double check how deep it goes. Squirt the rust with PB Blaster, let it sit a day. Repeat twice. At that point it should come out pretty well.
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Old March 30, 2013, 05:48 PM   #6
Skarekrow88
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0000 Super Fine Steel Wool and some oil or wonder blue should take care of that easy
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