advice for removing bore 'gunk'

[BammaYankee]

Just picked up a used rifle which apparently sat uncleaned in a garage for several years. It was horribly fouled with copper and it took several hours to get all the carbon and copper out. With a bore light the bore overall now looks in good shape with no apparent pitting.

Problem is that there are streaks of a light colored substance (sort of looks like baked on lithium grease) in some of the grooves and what looks to be very small spots of surface rust. There also seems to be s lot of lint left when I run a dry patch. I scratched at the streaks with a dental pick but no dice.

Question is... What do I do? I am considering Tubb's Final Finish (I already read the previous threads on this product) or ISSO paste to try and clean it up and smooth out any burrs. Any other suggestions?

 

[W.E.G.]

Kroil

brush

patch

fire some rounds

repeat

 

[Hk91-762mm]

When I get an old well used military rifle I soak the bore with Hoppies benchrest and let soak over night -IF its already pitted I used a stainless brush and scrub the death out of it followed by repeated soakings.
If the bore is OK and not pitted I will stop at the point No more green comes out on my patches .
For Grungy pited barrels I have coated a tight fitting patch with the grit wiped from a sharpening stone and swabbed and swabbed the bore untill it shines -Really makes a differance And Much more easy than casting lead slugs to hone the barrel.

 

[BammaYankee]

Should I let the Kroil soak for 10 - 15 minutes or no?

 

[Sunray]

You need to give the solvent time to work. Tap a rubber cork into the muzzle, just enough to keep it there. Then fill the barrel with solvent and leave it there for a few hours. Then, after safely disposing on the solvent, clean as per normal.

 

[justin 561]

Brake cleaner, its extremely cheap. Buy a few cans, seal chamber, spray cleaner in bucket, pour contents of bucket in barrel, let sit for a bit, drain, and run a few patches through. Great thing about Brake cleaner is it drys without having to wipe it and leaves no residue.

 

[bogie]

And it's also a de-oiler...

IMHO, not knowing what kind of rifle...

For a rimfire, let the barrel soak with kroil, then use a bronze brush (bronze core too - pro-shot), then let it soak a little more.

If it's centerfire, fill it with Butch's Bore Shine, and see what color it turns the next morning.

 

[W.E.G.]

It won't hurt to give the Kroil some time to work.

Its the repeated applications, the bullets through the tube, and the scrubbing while warm that will account for most of your progress.