Iosso

How much or how many passes with an IOSSO patch is too much?
I've got a tight bore barrel that is either going to get faster, or become a jack handle.
Tomorrow I'm going to give it a run of Tubb bullets to see if it responds, and I want it spotless ahead of time.
I've never used this paste before, but I'm not ruling it out for other barrels.
What hot tips are out there?

If it's "Iosso metal polish" it's not aggressive enough to change bore size in our life time. It's very fine material.
Bore laps like what used to be used to lap out tight spots in rifling were done with a lead cast lap and valve lapping compound of various grit sizes. Today's barrels are getting so well done, that process of hand lapping is pretty scarce today.
Maybe Tubbs will help it out a lot faster.

I use it all the time.Never has caused a problem.If your bore is real tight just use a worn brush and wrap it with a cotton patch,dab some on the patch and start working it into the bore,if too tight I have used a size smaller brush(from 30 cal to 270 cal).I use 20 strokes at a time.Remove the patch coated brush and discard the patch.Clean the bore and if your borescope says it's clean you are done!If not do it until the borescope shows no carbon or copper.Caution,carbon will layer on copper and hide it.It took me quite a while to get everything out the first time but when done you get a sense of accomplishment!
I run a patch of lightly oiled Kroil patch in the barrel and then run a tight patch to get most out.The residual amount will protect the barrel for years.
Edit to add:VinceMule told me to not throw away worn patches but save them for the above procedure.

Rooster, to clarify, are you using it until there are no black stains visible ?
I've got zero copper now, after a Boretech Eliminator soaking, patching, nylon brushing etc.
I use a Teslong every time I clean, for verification.

20 to 25 passes usually does the trick with Iosso or JB.

Phil Rizzo said:

Rooster, to clarify, are you using it until there are no black stains visible ?
I've got zero copper now, after a Boretech Eliminator soaking, patching, nylon brushing etc.
I use a Teslong every time I clean, for verification.

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Yes sir,when the patches come clean and out not black you are done!
If you ever want to check if carbon is present,just soak a patch with Free All Penetrating Oil (buy at auto stores like napa)and run it through.
If present it will be black,to help getting it out just let it soak for a while and then brush it out and repeat.
Free All cuts down carbon cleaning in half easily.

Old Rooster said:

Free All cuts down carbon cleaning in half easily.

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Just tried this last week. Stuff works wonders!

Iosso or JB on a patch over a stiff nylon bore brush works well.

Also works well on a Parker Hale type jag, but its more fiddley to get the right amount of patch material on it. This is closer to a solid lap as it has less give than a brush, but not enough to do any damage.

Old Rooster said:

Yes sir,when the patches come clean and out not black you are done!
If you ever want to check if carbon is present,just soak a patch with Free All Penetrating Oil (buy at auto stores like napa)and run it through.
If present it will be black,to help getting it out just let it soak for a while and then brush it out and repeat.
Free All cuts down carbon cleaning in half easily.

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What he says. Rooster just mentored me on his barrel cleaning method this last week, it works. The only thing I'll add on the free all side of it, use it in a well ventilated room, that stuff stinks.

For some reason our Heavenly Father created women with a nose similar to a Redbone Hound!
Mine says she can smell the "powder" when I reload.Yep,remember the ladies in the house when reloading/rifle cleaning if indoors.
Warmer weather is around the corner so I'll take my stuff to the garage.

Old Rooster said:

For some reason our Heavenly Father created women with a nose similar to a Redbone Hound!
Mine says she can smell the "powder" when I reload.Yep,remember the ladies in the house when reloading/rifle cleaning if indoors.
Warmer weather is around the corner so I'll take my stuff to the garage.

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So I'm not the only one with a wife with a bloodhound nose? Lol

I also use Iosso and as others have posted the stuff works real good. Something else that works great is Fritz bore cleaner (the green stuff). Works wonders on hard carbon and copper. Same procedure as Iosso.

cape cove said:

I also use Iosso and as others have posted the stuff works real good. Something else that works great is Fritz bore cleaner (the green stuff). Works wonders on hard carbon and copper. Same procedure as Iosso.

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I have used Flitz to polish a chamber that my brother buggered up not using a bore guide.
Worked like a charm and I don't see why it would not work getting carbon out of a bore as well.Certainly will polish the barrel!

It really works good. This is the stuff I use