Jb use..?

[msinc]

This is a debate that will rage on forever I guess. I get asked a lot about the use of JB and/or "what copper remover actually works?" I always tell people that it is one of the very few that actually does work and work good. I guess I should clarify that when I say JB works and I use it that don't mean I use it much or that it cant be overdone. Will it scrub the rifling out of a barrel or turn a nice cut 4 groove into a polygonal? No. I will also add that they make two different ones, one is "bore cleaner" the other is called "bore bright" and it is a polish. I have tried it and always got the same result, a bore that copper fouls worse. That don't make much sense, polish the bore and it coppers up worse??? But that is what happens to me every time.
As far as the bore cleaner, let me put it this way...it has been several years since I had a really, really excellent shooting so called "hummer" barrel. One thing is for sure, they are rare and if you got one you are lucky. If I ever get lucky enough to get my grubby meat hooks on another one I can guarantee two things...one, it will never be sold and two, I will be extremely very particular about how and when I clean it. I use JB in a minimal way now, but I would first try the soak for days with MC-7 if I really was in love with a particular barrel.
Scrub the rifling out of a barrel, not a chance and I wouldn't want to have to sit down and just try...but to just use it every cleaning whether I need it or not, no not going to do that either. I will also add that the black stuff that comes out on the patch I believe is mostly copper and not much, if any, stainless steel. When I use JB on a really bad coppered up bore I can almost immediately smell the copper getting broke down. This is a smell I don't get if used on a bore with very little copper. I still get some black stuff but no where near as much.

 

[JimT]

This is a debate that will rage on forever I guess. I get asked a lot about the use of JB and/or "what copper remover actually works?" I always tell people that it is one of the very few that actually does work and work good. I guess I should clarify that when I say JB works and I use it that don't mean I use it much or that it cant be overdone. Will it scrub the rifling out of a barrel or turn a nice cut 4 groove into a polygonal? No. I will also add that they make two different ones, one is "bore cleaner" the other is called "bore bright" and it is a polish. I have tried it and always got the same result, a bore that copper fouls worse. That don't make much sense, polish the bore and it coppers up worse??? But that is what happens to me every time.
As far as the bore cleaner, let me put it this way...it has been several years since I had a really, really excellent shooting so called "hummer" barrel. One thing is for sure, they are rare and if you got one you are lucky. If I ever get lucky enough to get my grubby meat hooks on another one I can guarantee two things...one, it will never be sold and two, I will be extremely very particular about how and when I clean it. I use JB in a minimal way now, but I would first try the soak for days with MC-7 if I really was in love with a particular barrel.
Scrub the rifling out of a barrel, not a chance and I wouldn't want to have to sit down and just try...but to just use it every cleaning whether I need it or not, no not going to do that either. I will also add that the black stuff that comes out on the patch I believe is mostly copper and not much, if any, stainless steel. When I use JB on a really bad coppered up bore I can almost immediately smell the copper getting broke down. This is a smell I don't get if used on a bore with very little copper. I still get some black stuff but no where near as much.

Copper is easy to get out, I use JB to get the carbon out.

 

[Jeff A]

Brownells sells a thing called a VG pellet. You have to buy a special threaded jag to put them on but it is a felt "tube". They work very well for any of the mechanical cleaners. JB also makes a non embedding paste.its grey the rouge one is red. They both have a place. The VG pellets work well

I too use the pellets.

I have used JB for many years and have never had any damage such as rounding of lands, etc like I read about. I probably us JB every 400 rounds or so. I let my patches tell me when it's time to use JB. As long as my patches glide evenly through the bore, I just use normal cleaning techniques. One the patches resist going smoothly through the bore, it's time for JB. I put the pellets on the special jag made for them. Coat them with JB Bore Cleaning Paste (not polish) and then apply a drop or two of Kroil. I use a good guide and a polished stainless steel cleaning rod. I keep the rod clean during the process. Once the carbon starts to come off things get very black. It may take 25-50 strokes to clean. Clean again using solvent and brushes & patches when done.

I have the Lyman and the Hawkeye Bore Scopes and have NEVER seen a problem.

 

[KenOath]

I routinely and aggressively scrub my varmint barrels with Iosso and never suffered loss of accuracy or premature barrel failure. In fact accuracy always improves over the dirty state. I clean conventionally with carbon and copper solvents, brushes and patches every time I shoot but every 150 rounds or so it's time for Iosso. I wrap a paper towel strip approx one and a half times around a brush one caliber smaller than the bore so the fit is tight. 25-30 strokes typically. I then run many wet swabs of any type of solvent followed by dry patches to make sure all traces of Iosso are gone before shooting. I own a borescope which led me to cleaning with Iosso.

Are those 25-30 strokes just around the lands/throat first 4 to 5 inches of barrel or entire barrel, do to run Iosso out past crown and back over it again?

Cheers Rushty

 

[284winner]

I used JB bore bright in a sequence on a Savage 22-250 once. Was apparently an accuracy technique I read in a shooting magazine. Shoot once and clean bore with 10 strokes of the JB. Continue that for 10 shots. Afterwards, clean the barrel as you would after shooting a rifle. Then shoot it for accuracy. Have to admit, it actually made my 22-250 a better more accurate and consistent gun. Have heard guys say no way that would help. Well, it helped. Turned a 1" gun into a .5 + shooting rifle. That was a factory barrel that probably had a bunch of imperfections in the rifling and the JB cleaned alot of those up. Can't say. Only know it shot better in the end.