Rusty barrel crown: A Big Problem?

GunXpatriot · November 29, 2012, 01:54 AM

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?

.22lr · November 29, 2012, 08:44 AM

Shoot it.

If your accuracy is degraded, recrown the barrel.

If not, continue merrily.

Happy holidays.

`Matt

warbirdlover · November 30, 2012, 04:05 PM

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.

http://www.amazon.com/KRUD-KUTTER-RG...s=rust+remover

Bill DeShivs · November 30, 2012, 04:27 PM

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.

James K · November 30, 2012, 07:37 PM

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

publius · December 15, 2012, 09:19 PM

Always heed Bill's advice, he knows his stuff.

November 29, 2012, 01:54 AM	#1
GunXpatriot Senior Member Join Date: November 28, 2011 Location: New York Posts: 393	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?

November 30, 2012, 04:27 PM	#4
Bill DeShivs Senior Member Join Date: April 7, 2006 Posts: 10,981	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 www.billdeshivs.com

December 15, 2012, 09:19 PM	#6
publius Senior Member Join Date: January 25, 2005 Location: Mississippi/Texas Posts: 2,505	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

November 29, 2012, 08:44 AM	#2
.22lr Senior Member Join Date: July 14, 2007 Posts: 245	Shoot it. If your accuracy is degraded, recrown the barrel. If not, continue merrily. Happy holidays. `Matt

November 30, 2012, 04:05 PM	#3
warbirdlover Senior Member Join Date: December 13, 2009 Location: central Wisconsin Posts: 2,324	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. http://www.amazon.com/KRUD-KUTTER-RG...s=rust+remover

November 30, 2012, 07:37 PM	#5
James K Member In Memoriam Join Date: March 17, 1999 Posts: 24,383	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