Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Gunsmithing


cleaning a REALLY dirty barrel

LinkBack Thread Tools Display Modes
Unread 01-19-2008, 03:25 PM
Silver Member
Join Date: Jan 2008
Location: Pelham, AL
Posts: 182
cleaning a REALLY dirty barrel

I've tried 3 times of swabbing and scrubbing but still can still see visible fouling in the barrel. I've used Barnes CR-10, Birchwood Casey and Gunslick copper clean.

What is the most agressive cleaner to use for copper and powder residue?

I told to fill a small bucket with ammonia and put the muzzle is the bucket and use a brush to scrub the barrel. Good idea?

The gun I am working on is a Spanish Mauser that has been sporterized with the original barrel I am beginning to believe that the previous owner never completely cleaned the cosmoline or what ever preservative that was used prior to shooting. Maybe used corrosive ammo. I don't reaaly know, I just want it cleaned so I can practice some gunsmithing on the rifle.

Reply With Quote

Unread 01-19-2008, 04:40 PM
Platinum Member
Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,517
Put the barrel in a bucket of ammonia?????????? I don't think I'd go that route that if I were you.

Really fouled bores often have fouling in layers. Copper over carbon over, etc. I have noticed that really stubborn fouling often requires the use of alternating between the cleaning methods.

Try an agressive copper remover like CR-10. Then switch to a mechanical cleaner like JB compound, then switch back again. Another good alternative is using Wipe-Out bore foam along with their Accelerator. Just apply the Accelerator and then spray in the foam. Leave it in for several hours or overnight and then switch to the JB, if necessary. The nice thing about bore foam is that you don't need to do any elbow work.

Stick to it and you'll get there.

Weatherby once told me that 75% of the rifles that were returned to the factory for accuracy problems only needed a thorough cleaning.

Last edited by Varmint Hunter; 01-26-2008 at 04:06 PM.
Reply With Quote
Unread 01-19-2008, 06:58 PM
Platinum Member
Join Date: Jun 2001
Location: Potomac River
Posts: 5,088
Boone's Farm will work. I prefer Strawberry Hill. Get a bottle of it and a bag of chips, a log of hard salami and a roll of Gouda Cheese.

Wear out three bronze bore brushes and a bottle of solvent on the barrel while getting totally drunk on the Boone's farm and eating all of the salty chips and salami and cheese. In the morning roll over and crawl to the bathroom and climb up to the sink and shave and go to work. Come home and find a 0.5 MOA rifle ready to rock and roll. I still do not know what possessed me to sell that rifle. It was sold to me as having a shot out barrel but once cleaned it was deadly. I was obviuosly single in those days and could behave anyway I wished.
The Smokin Fur Rifle Club
Reply With Quote
Unread 01-19-2008, 08:32 PM
Gold Member
Join Date: Jun 2007
Location: Chelan Co, Washington
Posts: 563
Buffalo Bob - you sound like a real wild-man wino!

Rocky - how many rounds have been through that original barrel? If you've tried that hard to clean it - there may be checking & erosion that holds the fouling. Might be worth paying for a bore-scope evaluation of the barrel to see if it's worth saving.

As an alternative, have you considered one of the foaming bore-cleaners that are typically left in the bore for some time? Might be worth a shot.

Good luck! Guy
Reply With Quote
Unread 01-19-2008, 09:07 PM
Silver Member
Join Date: Dec 2007
Location: Youngsville, NC
Posts: 434
Cleaning a really dirty barrel

I will make the following suggestions.

For Copper use Montana Extreme nothing compares to it.

For Carbon Use the "old Formula" GM Top Engine Cleaner mixed 1:4 with Marvil Mystery Oil.

Push your brushes only one direction, chamber to muzzle.

If you take what you think is an already clean barrel, you will find it takes another 20-50 patches to get your barrel clean. I was shocked the first time I did this.

Bore scope it before and after and you will be amazed.

For an abbrasive nothing beats lava soap on patches.

Reply With Quote
Unread 01-19-2008, 09:23 PM
Platinum Member
Join Date: Nov 2005
Location: Texas
Posts: 1,845
Don't mean to hurt feeling here but IOSSO worked period end of story.... Have used the bore scope to actually verify the results too many times to have any doubts---without a bore scope you are just really guessing.. Tried most of what others have listed and they are only partially effective.. Buy the IOSSO bore cleaner paste and just follow the instructions---very easy. Remember one test is worth a thousand expert opinions.
The Truth Is Not Always Good For Business!!
Reply With Quote
Unread 01-20-2008, 01:41 AM
Silver Member
Join Date: Jan 2008
Location: Pelham, AL
Posts: 182
Guy M,
I have know idea of the round count. I have not fired it since I bought it. It is a Spanish 1924 Mauser that has been sporterized. Barrel appears to be original (by looking at contour and sights). The lands and grooves look good, not worn smooth and no visible throat erosion without using bore scope. It is just that I can still see residue and it "feels sticky" when using a jag and patch. sticks mostly in the first third to half of the bore.

Seeing I am on work comp at the moment and need not worry about going going to work with a hangover, I think I will try your method next. Come to think of it, I have several rifles in the safe that could use a good cleaning over the next week or so. Might need to take a few days off after cleaning before I go to the range and test fire though.
.............................................. ....................:eek:

Reply With Quote


Thread Tools
Display Modes

Similar Threads for: cleaning a REALLY dirty barrel
Thread Thread Starter Forum Replies Last Post
Cleaning brass - inside case still dirty?? sharktown Reloading 27 07-03-2013 06:44 PM
Barrel Cleaning Kalle "Cully" Hyrkas Rifles, Bullets, Barrels & Ballistics 6 03-17-2011 10:18 AM
Barrel cleaning ? sniperjwt Rifles, Bullets, Barrels & Ballistics 14 05-16-2010 09:36 PM
Barrel Cleaning spradley19 Long Range Hunting & Shooting 27 05-05-2008 09:46 PM
Barrel cleaning. speeders General Discussion 1 10-18-2005 06:38 PM

All times are GMT -5. The time now is 03:54 AM.

All content ©2010-2015 Long Range Hunting, LLC