JB Bore bright (polish)?

[WyleWD]

Does anyone use this at all in 22RF stainless barrels to get out stubbon stain(s)? Thanks in advance for any responses. WD

 

[dutch14]

I assume you are wanting to use it on the inside of the barrel. If it would remove a stain it would have to remove metal. Removing metal isn't a good idea. The next question is how did you get a stain inside the barrel. Are you referring to black carbon deposits or shiny lead deposits? I've found it's not a good idea to get carried away removing carbon deposits. I've yet to have a 22 rf barrel collect lead in 60 or so years of shooting rimfire. Where I've seen it happen in centerfire there was a problem with either the bullet being too soft of an alloy or the barrel being rough. A phosphorbronze bore brush should remove either carbon or lead without removing the metal of the barrel.

 

[WyleWD]

I assume you are wanting to use it on the inside of the barrel. If it would remove a stain it would have to remove metal. Removing metal isn't a good idea. The next question is how did you get a stain inside the barrel. Are you referring to black carbon deposits or shiny lead deposits? I've found it's not a good idea to get carried away removing carbon deposits. I've yet to have a 22 rf barrel collect lead in 60 or so years of shooting rimfire. Where I've seen it happen in centerfire there was a problem with either the bullet being too soft of an alloy or the barrel being rough. A phosphorbronze bore brush should remove either carbon or lead without removing the metal of the barrel.

Yes, inside the barrel, referring to a couple of black streaks within the first 2-3 inches of the barrel past the chamber. Thanks for responding. WD

 

[dutch14]

The description sounds like carbon which should come out with a couple of 20 min soaks in bore tech c-4 carbon remover and about 30 passes of a tight fitting bore brush. However, I wouldn't get obsessed with black streaks.

 

[PWNolan]

....I've yet to have a 22 rf barrel collect lead in 60 or so years of shooting rimfire

It happens. I've had bad leading in 3 22 LR barrels that I recall

 

[dstoenner]

I use it after every other cleaning of my rimfire barrels. It is a rouge polish. Cleaning up after polishing the nylon brush goes oh so smooth.

David

 

[WyleWD]

I use it after every other cleaning of my rimfire barrels. It is a rouge polish. Cleaning up after polishing the nylon brush goes oh so smooth.

David

Thanks for the reply, I appreciate your input. WD

 

[TRSR8]

I use it after every other cleaning of my rimfire barrels. It is a rouge polish. Cleaning up after polishing the nylon brush goes oh so smooth.

David

If they are SS barrels, you are slowly, methodically ruining them.

 

[Frankr]

I’ve used JB Bore and Bore bright for polishing up CF barrels that get a little rough in the throat to 4” down the bore. I don’t know that polishing up a RF barrel is what you want. I understand it can cause a problem with the bullet lube.
I think the C4 and a brush is what you would want to use.

 

[Rsadams]

I have used JB bore paste for .22 steel barrels occasionally for years and haven't seen a problem yet even with a bore scope.... The c4 carbon remover will work just fine also their rimfire blend works nicely...

 

[doclu60]

I use it after every other cleaning of my rimfire barrels. It is a rouge polish. Cleaning up after polishing the nylon brush goes oh so smooth.

David

Look down at third quote here by TRSR8. His answer is spot on.

I’ve used JB Bore and Bore bright for polishing up CF barrels that get a little rough in the throat to 4” down the bore. I don’t know that polishing up a RF barrel is what you want. I understand it can cause a problem with the bullet lube.
I think the C4 and a brush is what you would want to use.

Correct. Quick story here. I am testing ammo and the guy running the test bore scopes my barrel. It's a custom lapped well known barrel. He tells me there is cleaning rod damage in the barrel. He shows me the linier scratches running the length of the barrel. He also tells me he uses Iosso to polish such scratches out. I finish the testing and then contact by barrel MFG. He tells me the scratches are there for a reason and explains that is what holds the bullet lube when fouling the barrel after cleaning. Bottom line, using a heavy abrasive cleaner/polishing compound in a custom lapped RFBR barrel is a no, no. C4 and a brush will clear the carbon fouling, if the barrel is regularly cleaned. You keep 'polishing' the barrel and it is going to go south way before it's time.

If they are SS barrels, you are slowly, methodically ruining them.

Absolutely correct. JB has ruined a lot of RF barrels over the years.

Scott

 

[Bottom Fodder]

To me paste in a rimfire is a “when all else fails“ and have you nothing to lose

 

[Tad_Earhart]

To the OP, if your after carbon in the bore, the C4 carbon cleaner is likely your ticket. It is pretty impressive how easily and well it works. Just let it soak in for a few minutes and patch it out.

On the front of JB Bore paste, it is not the boogie man that everyone makes it out to be. Does it need to be a part of your regular cleaning? No it does not, BUT once a year, or twice a year if you shoot a lot, may not be a bad idea to do light work with it. With the smaller amount of shooting I am doing now, my barrels typically get a round of JB at the beginning of the year and that runs through to the next year without need of any more. A slug will tell you where your at on this. Jumpy slugs from surface finish are not desirable. Of the bores ruined by "JB" I would say most if not all were ruined by rod damage not the JB itself.

Tad

 

[BoydAllen]

A friend built a .22 RF benchrest rifle using the highest quality components available. It shoots extremely well. Recently he noticed that he was getting some signs of lead when he cleaned and was seeing a slight fall off in accuracy. He has spent years learning how to lap barrels, so he used that process to put a slightly rougher finish on the barrel, which he had decided had become too smooth, causing the problem. After lapping, the problem was gone as well as the slight loss of accuracy.

 

[TRSR8]

To the OP, if your after carbon in the bore, the C4 carbon cleaner is likely your ticket. It is pretty impressive how easily and well it works. Just let it soak in for a few minutes and patch it out.

On the front of JB Bore paste, it is not the boogie man that everyone makes it out to be. Does it need to be a part of your regular cleaning? No it does not, BUT once a year, or twice a year if you shoot a lot, may not be a bad idea to do light work with it. With the smaller amount of shooting I am doing now, my barrels typically get a round of JB at the beginning of the year and that runs through to the next year without need of any more. A slug will tell you where your at on this. Jumpy slugs from surface finish are not desirable. Of the bores ruined by "JB" I would say most if not all were ruined by rod damage not the JB itself.

Tad

Maybe….maybe not.
You give me an abrasive, I’ll give you 15 ways guys choose to use it, 14 of which are probably wrong.
I ‘d bet several use JB on a bronze brush. You should watch the video with Frank Green. from Bartlien talking about abrasives used with brushes and how it will ruin a barrel, quite enlightening.
There is , IMHO, nothing fouling Match grade RF barrels that cannot be addressed with a proper solvent and a few minutes time.
Based on forum postings, most guys seem unaware about final finish for hand lapped barrels, it’s about 150+/- and it’s there for good reason and not too tuff to compromise it.
Only time I personally use JB, on a tight patch, is with CF heat cracked barrels, but hell, by then they’re mostly toast anyway.

 

[doclu60]

To add to the above post #15, I have watched a barrel MFG guy lap barrels. He starts with 120 aluminum oxide and finishes with 180 silicon carbide. He also does not recommend JB in a RF barrel, or Iosso. Way too aggressive, especially on custom tapered lapped barrels. I do own and use Iosso, but not on my RF barrels.

Scott

 

[1911nut]

In another thread I asked Frank Green of Bartlein barrels -

Frank, so you would recommend against Iosso bore cleaner with their super stiff blue nylon brush?

his response:

Correct... no brush of any kind with any abrasive. I don't care if it's an abrasive liquid cleaner as well like Remington 40x cleaner, Thorro Clean, Witch's brew etc...and applies to paste cleaners like Iosso, KG2, Flitz etc...

 

[WyleWD]

Thanks to all who have responded. I appreciate all of your inputs.

In full disclosure, my plan going forward is to try the C4. If it doesn't take it out, then Rimfire Blend. If it doesn't take it out, then try the JB Bore Brite route.... lightly. I don't want to use the JB bore brite as a regular cleaning practice and, No way am I even considering Isso, bore paste, Thoro Clean, etc. If the stain is removed and accuracy is still not acceptable the barrel becomes a tomato stake. Shooting short range CF benchrest as I do, I feel I know when to say when.

A sincere thank you to all who have responded. WD

 

[dstoenner]

If they are SS barrels, you are slowly, methodically ruining them.

Well i cannot say anything about rimfire barrels that i use it on. They are shooting better than when they started out but it is hard to wear out a RF barrel. I read where an olympic shooter had 100k rounds through his and it was still going

But i can comment on my centerfire stainless barrels. I pull a barrel when the throat erosion has reached 100 thousandth. I have a 6br that went 3200 rounds using this sort of cleaning. My F-class barrels went pretty much as normal for what other competitors see, 260 rem 2500, 6x47L 2k. My 223 barrels make 4k. If i was slowly ruining them it is hard to tell.

I use a worn out bronze brush with a patch wrapped around the brush with the bore brite then finger applied. I also let the old patches build in in brush so there is a cushion.

David

 

[WyleWD]

Thanks to all who have responded. I appreciate all of your inputs.

In full disclosure, my plan going forward is to try the C4. If it doesn't take it out, then Rimfire Blend. If it doesn't take it out, then try the JB Bore Brite route.... lightly. I don't want to use the JB bore brite as a regular cleaning practice and, No way am I even considering Isso, bore paste, Thoro Clean, etc. If the stain is removed and accuracy is still not acceptable the barrel becomes a tomato stake. Shooting short range CF benchrest as I do, I feel I know when to say when.

A sincere thank you to all who have responded. WD

Update: Hoppe's 9 wouldn't budge it. C4 scrubbed reduced it VERY little, Soaking with a mop no change.

So I skipped the Rimfire Blend, and went straight to the JB Bore bright, barely stained the patch with it and 7 strokes later I pushed the patch and it was black enough that I thought I got it. Flushed the BB out, broke out the borescope and WOW, a shiny smooth, clean barrel from one end to the other. So when the storms and wind get past will make a trip to the range.

Thanks again for all your responses. I appreciate all of them. WD