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On the subject of bronze brushes versus nylon.

I became a crowd follower, while claiming not to be.

On the subject of bronze brushes versus nylon.

I've been getting several strange results trying to figure out a groove diameter. After trying several methods, and looking at things carefully with a borescope, I realised the measurements are skewed by carbon buildup in the grooves towards the muzzle.

The rifle is fairly new, 300 rounds approximately so far. I've always used nylon brushes to clean it. I dip the end of a brush in the particular solvent, then brush the barrel with ten strokes. seperate brushes for each solvent. My cleaning involves a first pass with Ballistol, patched out, and a second with Boretech Eliminator. This process is repeated three times, and the Boretech sits for about 10 minutes each time before being patched out. I sometimes use Forrest bore cleaning foam before the first pass of Ballistol, and leave it in for an hour before continuing,

When the last patch is clean, I run one final patch with balistol, and I put the rifle away. I thought I was doing a good job of cleaning.

The first thing I did when I realised what I was dealing with was a twenty strokes scrub with Eliminator, and let it sit for an hour. Two patches later it was 'clean'. Borescope called bull-crap. Eliminator, brush, leave overnight. Next day, first patch was clean. I went through other solvents in my box. Butch's Bore Shine, Shooter's Choice and a foul smelling orange liquid in a bottle with no label. Nothing better came of it. I used JB Bore paste. All I got on the patches was JB Bore Paste. Same with Iosso. Then I went to Google.

I found mention of using a penetrating oil and a brush.

So I got myself a tin of Q5. Applied the Q5, brushed with the nylon brush, a bit of black on the first patch, third patch clean. Borescope still calling bull-crap.

I had one old bronze brush. It was the right size for the bore. Liberal squirt of Q5, wait one minute, bronze brush - jackpot. My barrel vomited black oil. I've been repeating this every few hours for two days, and the borescope is finally agreeing that cleaning is actually taking place.

300 rounds sounds like a low round count to have such a hard carbon fouling problem, but that represents close to 32,000 grains of powder. Enough, I think, to build up to this extent.

Nylon brushes do not clean anything. All a nylon brush does is spread the solvent around the bore nicely for you, and solvent is great for dissolving copper. All I manged to do with nylon brushes and patches was remove excess, then polish the residue into place in the barrel.

Whoever invented the nylon brush was not a rifle shooter, and never had to get a rifle barrel clean with one.

This is not a comment on the efficiency of any product named here. I just described what I did, and with what. It is entirely possible I was using the product the wrong way, not enough of, or without a key additive to go with it.

I've ordered bronze brushes for all my target rifles. I understand a bronze brush eventually wears, but that's why you can buy packs of 10.

The nylon brushes are only good for spreading copper solvent in the bore.
 
Had a quick look for Q5, appears to be a graphite-enriched penetrating oil. How much graphite does it contain? Are you seeing any graphite residue?

BTW, I agree that nylon brushes and solvent do nothing on carbon. I’m a bronze guy.
 
I’m all for using the products and methods that work for you! May I ask what caliber requires over 100 grains/round? Burning that much powder per round may be related to the carbon buildup…
 
Gun cleaning is kinda like religion. I'd sooner tell a man he's driving the wrong truck than suggest telling him how to clean his rifles.

But I'll observe that both J B Bore Paste and Iosso are both mild abrasives and are usually the treatment of last resort for many. If a bronze brush succeeded where they failed... suggests there might be a little more to the story.

OP, glad you got your bore sorted!
 
I RUINED a barrel in thirty strokes with a NON spiral Stainless steel brush. A friend brought it over to my house for US to use on his barrel. I told him that it would ruin the barrel, he insisted that it would not.

The Stainless brush put deep scratches on top of the lands and in the grooves for the entire length of the barrel. However, the barrel was clean of the hard carbon fouling.

Not all Bronze bristle brushes are created equal, I prefer Dewey and Pro Shot. Not all plastic brushes are created equal either, and I like the very stiff Iosso and Montana Extreme Plastic brushes for cleaning and winding Fine Bronze Wool in.

Lots of gun cleaning Snake Oil out there that will NEVER touch HARD Carbon fouling.

A couple of very good video's on You Tube by this gentleman concerning gun cleaning:



Free All penetrating oil has a chemical that will dissolve carbon, but it takes some time to get through the really thick carbon fouling, we never realize just how hard this carbon gets. The Free All used with Bronze bristle brushes, tough plastic brushes, then winding Fine Bronze Wool in the bristles of each, has proven to be easy on barrels with no discernable scratches or rounding of the lands, or opening of the throat Dia.

Bore scope video is awesome!

When you go to using abrasives, depending on the abrasives, you can certainly open the throat dia along with changing your throat length. Abrasives are VERY different in the grit size.
 
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With the somewhat recent availability of fairly inexpensive bore scopes, many of us have learned what works and what doesn't. From there, you can decide what cleaning practices are best for you and your rifle.


I've personally gone to Iosso. I'll "soften" it up and remove the loose stuff with wipe out, patch out, or eliminator...whatever I grab first. Let it work while I decap brass or something. Patch it out. Patch the bore with oil...penetrating oil...whatever I grab first. Then a few patches with Iosso. Patch it out and it's to bare metal with minimal time or work.

I feel it's better to run a couple patches of a mild abrasive than run countless brush strokes every cleaning.


Hard carbon absolutely needs removed via mechanical means. Bronze brush or an abrasive. "Carbon" cleaners will remove loose fouling. But so will pretty much anything.
 
Cleaning a 6 PPC after 8 shots is very different from cleaning a 308 F class rifle after 110 shots with SIX,10 shot rapid fire strings. A PRS barrel after a match is going to vary greatly from an informal target shooter after 30 shots.
A p.dog or ground squirrel shooter that shoots hundreds of rounds in a target rich environment will test the best of cleaning techniques.

Guys talking about what works for them and they never mention a word of their application/use, or if they are checking their results with the "clean patch" method or using a Bore Scope to verify.
 
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I have remembered reading that when using a bronze brush that you weren't suppose to reverse directions so no scrubbing back and forth.

Is there any truth to this?
 
I do not require my used barrels to look like they are not used.
I kinda go by the way it cleans, patch feeling as it's going down. After a good regimen of patch soak, patch brush patch brush patch, I'm done.

Bore scope tells me groves & neck ring build up & then copper.

EVERY time i brush it the first patch comes out black. The second is clean.
I could go for days like this....

Excessive brushing raggs the edges of the groves, imo

Worn brushes work great in scrubbing throat aka back n forth ....imo
 
Just curious... what flavor of 'nylon brush' were you using?

The blue Iosso brushes are a very different critter than the black nylon brushes commonly available at most LGS.
Not sure what make. I picked them us at my local GS.

I switched to nylon very soon after using a copper solvent, it seemed to me the solvent would just eat the bronze brushes.

When I bought the nylon brushes, I liked that they were fat and the bristles seemed thick. Feeling with my fingers, they felt like they were still enough to do the same job as a bronze brush.

When this one is done, I need to go through all my rifles and see what I've been missing.
 
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EVERY time i brush it the first patch comes out black. The second is clean.
I could go for days like this....
You may be suffering from a case of hard carbon buildup.

Your brush / solvent lifts an exceedingly thin layer each time, with no end in sight.
 

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