J-b non-embedding bore cleaning compound ?

S

Shadow9mm

New member
Anyone used this and thoughts? I can't seem to find many new videos or articles on it. I used it, per the instructions tonight and did 2 rounds and it kept coming out black, even at the end of the cleaning process. I'm trying to figure out at what point I am no longer cleaning but removing metal...

1 cycle of bore tech eliminator (first 3 rows)
1 cycle JB (10 passes) followed by CLP Oil and dry patches (4th row)
1 Cycle of bore tech eliminator (next 3 rows)
1 cycle bore tech carbon remover (next 3 rows)
1 cycle JB (10 passes) followed by CLP oil and dry patches

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What exactly are you trying to accomplish? It's not like these witches brews are going to suddenly make your rifle shoot accurately. Remove the carbon, remove the copper, then what? The only thing left is wearing the bore.

Oh, just BTW, you will never get a clean patch out of a rifle once it's been fired.
 
Scorch said:
Oh, just BTW, you will never get a clean patch out of a rifle once it's been fired.
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If that's true, you'll never get a brand new rifle's barrel clean evidenced by clean patches.

They're all fired a few times with proof loads.

Except for the ones I've bought, obviously. They don't dirty patches after I've cleaned them before shooting them.
 
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Scorch said:
What exactly are you trying to accomplish? It's not like these witches brews are going to suddenly make your rifle shoot accurately. Remove the carbon, remove the copper, then what? The only thing left is wearing the bore.

Oh, just BTW, you will never get a clean patch out of a rifle once it's been fired.
Click to expand...
rifle is still in its break in period, trying to get it extra clean between the next couple range session for everything to smooth out and hopefully minimize copper buildup in the future.
 
Every shot fired erodes the throat making it rough. Burning powder at high pressures temperatures acts like a cutting torch. Every couple to few dozen shots advances the throat .001" further down the barrel.

I've never "broken in" a barrel.
 
Shadow9mm wrote:

1 cycle of bore tech eliminator (first 3 rows)
1 cycle JB (10 passes) followed by CLP Oil and dry patches (4th row)
1 Cycle of bore tech eliminator (next 3 rows)
1 cycle bore tech carbon remover (next 3 rows)
1 cycle JB (10 passes) followed by CLP oil and dry patches
Click to expand...

IMO, You went too far with that last 10 passes of JB.
 
I use it on occasion--but very judiciously--typically when I can visibly see significant fouling in the lands and grooves. I don't follow any procedure--I go by feel and degree of "junk" that comes out with each successive patch. I look more for "tons of junk" coming out as opposed to "anything discoloring the patch at all"--in other words I don't keep passing it through the bore as long as any discoloration at all comes out.
 
The directions say use sparingly. Only time I use JB is in my revolvers after shooting cast bullets. Last year, I got some Shooters Lube products and they're the best I've used in 50 years of cleaning guns.
 
JB is a very light abrasive, you didn't hurt your barrel. Put some on a patch and scrub an old barrel on the outside or some metal that is similiar to barrel steel where it's easily seen, it takes alot scrubbing to do anything.
I believe JB uses animal fat as the suspension, scrub the barrel with a nylon brush with Dawn dish soap, it will be squeaky clean in a couple of minutes, make sure you recoat the inside of the barrel with a penetrating lubricant afterwords.
 
Double K wrote:

Posts: 69 JB is a very light abrasive, you didn't hurt your barrel.
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I agree, I don't think you "hurt" the barrel.

My experience with JB is limited to mostly to 22LR rifles and old military rifles.
I use it the first time on all new-to me used 22LRs and old military rifles
to clean up the throat just ahead of the chamber.
Based on a bore scope, when I can see that ring of fouling.
Once that's gone I don't use it for routine cleanings at all.

Guess I'm saying that I don't use JB unless I see a problem.
 
Shadow9mm said:
Anyone used this and thoughts? I can't seem to find many new videos or articles on it. I used it, per the instructions tonight and did 2 rounds and it kept coming out black, even at the end of the cleaning process. I'm trying to figure out at what point I am no longer cleaning but removing metal...

1 cycle of bore tech eliminator (first 3 rows)
1 cycle JB (10 passes) followed by CLP Oil and dry patches (4th row)
1 Cycle of bore tech eliminator (next 3 rows)
1 cycle bore tech carbon remover (next 3 rows)
1 cycle JB (10 passes) followed by CLP oil and dry patches

attachment.php
Click to expand...
It will come out with color indefinitely. The only way I know to ever get a clean patch out after JB is run a few patches of non chlorinated brake cleaner down the bore. After you use brake cleaner, be sure to run an oily patch down bore. A non stainless barrel will rust overnight. The brake cleaner is not corosive, but it strips absolutely all oil and leaves steel totally un protected.
 
JB

I've used JB on a Rem 700 ADL/.270 that is absolutely the worst copper fouler I've ever seen. I mean, I have used a lot of JB on it initially in the first year of so I owned it, maybe a hundred passes over the course of time. Now, some twenty years later, the rifle does not foul quite as much, and is as accurate as ever.

I doubt you hurt your bore any.
 
Whenever I get a rough throat in a varmint rifle a light polish with JB brings the pressures back own and keeps them from fouling to quickly, I can feel when it polished with a tight fitting dry patch. Usually about 20 strokes is sufficient.
 
J-B bore cleaner paste won't harm your barrel. Brownell guarantees that.

For several years, Sierra Bullets used a bore cleaner in their test barrels made with very fine dental pumice mixed with Hoppe's No. 9 bore solvent. Nicknamed "Martin's Mustard" because it looked and poured like yellow table mustard and was made by their ballistics manager Martin Hull. I liked it better than J-B and it was cheaper.
 
so my bore scope came in. no damage done. There was still some copper fouling though. Did another pass with my copper remover and am calling it good.
 
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