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Old November 29, 2012, 01:54 AM   #1
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Rusty barrel crown: A Big Problem?

So I was cleaning my guns from the previous range trip, including the range trip before that. I had put off cleaning my Marlin 795 for a while, and now that I've cleaned it, I realized there was rust on the muzzle crown! it was located between where the rifling ends and the "outside rim" of the crown. I took some break free and a few paper towels and "buffed" it out with my finger. There is still some left. Should i be worried about accuracy? The actual edge where the rifling ends is completely undamaged. I feel like it got this way because at that last range trip, the air conditioner didnt work and it was about 92 degrees out. I rapid-fired the hell out of the thing and put it back in the case when it was pretty hot. Even after all this time, when I opened the gun case, I could literally feel humidity escape... So. Will this be a big deal?
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Old November 29, 2012, 08:44 AM   #2
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Shoot it.

If your accuracy is degraded, recrown the barrel.

If not, continue merrily.

Happy holidays.

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Old November 30, 2012, 04:05 PM   #3
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What .22lr said but there are some rust removing compounds that I would try. Get the rust off and then put some oil on it.
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Old November 30, 2012, 04:27 PM   #4
Bill DeShivs
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Take a small wad of 0000 steel wool, and very gently scrub it in a circular motion with your thumb until the remaining rust is gone. Make sure you clean the residual steel wool from the bore and action. You might plug the bore with a patch or piece of tissue first.
The chemical rust removers will remove the bluing-the steel wool won't.
Bill DeShivs, Master Cutler
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Old November 30, 2012, 07:37 PM   #5
James K
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The critical point is "where the rifling ends". That point must be even or the bullet comes out of the barrel unevenly and accuracy goes to heck.

As for anywhere else, there is no effect. There is no way rust between the hole in the barrel and the outside of the crown could affect anything.

Jim K
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Old December 15, 2012, 09:19 PM   #6
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Always heed Bill's advice, he knows his stuff.
"Suppose you were an idiot, and suppose you were a member of Congress, but I repeat myself." Mark Twain
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barrel , crown , rust

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