Abrasive Bore Cleaner Specifications

[JMayo]

What's "non embedding" jb vrs regular jb ?

 

[Dusty Stevens]

What's "non embedding" jb vrs regular jb ?

Regular jb is non embedding. It has the blue writing. Then theres the red jb bore shine. Its less abrasive than the blue. Both are good to have. I use them both pretty regularly

 

[fyrewall]

Bon Ami Original contains feldspar, which is 6 on the Mohs scale.

Factoid -- diatomaceous earth is primarily silicate made up from the dead bodies of tiny little one cell sea creatures, hardness about 7. The little chick on the feldspar containing Bon Ami has not scratched yet.

 

[Nature Boy]

Regular jb is non embedding. It has the blue writing. Then theres the red jb bore shine. Its less abrasive than the blue. Both are good to have. I use them both pretty regularly

I’m confused

I thought JB bore paste was less abrasive than JB bore shine

I also thought IOSSO was more abrasive

 

[Dusty Stevens]

I’m confused

I thought JB bore paste was less abrasive than JB bore shine

I also thought IOSSO was more abrasive

No and no. Get all 3. They each work very well and need to be in every cleaning box

 

[Nature Boy]

No and no. Get all 3. They each work very well and need to be in every cleaning box

I have all but the JB bore shine. You are correct, they do work when other things don’t.

 

[Prose]

Straight from the horses mouth:

"The Iosso Bore Cleaner is Bio-Based made from natural plant extracts. It has no odor at all. The Gunbrite is our original formula. The abrasive in both is the same which is very soft and round cornered which is what makes it clean oxidation and fouling without scratching. Yes, it is from a fossil origin. I hope that helps!"

 

[Prose]

Some of the AL oxides & silicates appear to be very aggressive and to be used with caution. Glass has a hardness of about 7 and I would guess that anything more than that would be sort of scratchy. The goal appears to be removal of copper and carbon fouling. JB removes fouling fast and the Montana brand bore polish is labeled as containing AL compounds and that works about the same. I like chemicals more but on occasion use bore polish.

The montana cream is advertised as "Non-abrasive to barrel metals." Obviously this means that whatever it is is softer than barrel metal...
However, according to the SDS for their X-Treme copper cream, it contains silica crystalline - quartz, which is pretty hard. (7-7.5) on the MOHS scale.

The copper cream does not contain any Aluminum Oxide (9) compounds. Is does have plenty of ammonium though...

 

[JBT47]

So what does Iosso measure on the MOHS scale?

 

[Prose]

So what does Iosso measure on the MOHS scale?

I think 3, not more than 4 based off what they told me. Fossil Based and not diatomaceous earth. Calcite is a 3 for sure. Could be something else. Either way it's a lot softer than quartz/glass/silica.

 

[JBT47]

I think 3, not more than 4 based off what they told me. Fossil Based and not diatomaceous earth. Calcite is a 3 for sure. Could be something else. Either way it's a lot softer than quartz/glass/silica.

Thank you

 

[1lnbrdg]

Too much? I dunno. Works, haven't realized any shorter barrel life in the last 15 or so barrels. Use it somewhere betwixt every 300 - 500 rounds.

I buy this and mix in wheel bearing grease:

https://metlabsupply.com/abrasive-powders/aluminum-oxide/aluminum-oxide-powder-3-micron-1lb

 

[msinc]

You got it right.
As a journeyman painter, I'm not running 800 grit down my barrel. 2000 grit possibly.

Just about all custom aftermarket barrels are lapped with 300 or 400 grit lapping compound. That is the final finish and what you receive. Factory barrels are not lapped and most appear terrible in a borescope. I have lapped a lot of factory barrels and never use finer than 400 grit. Just about every one of them show a little accuracy improvement. Some show quite a bit, to the point of surprising even me and that is hard to do at my age and experience with guns.
I don't use it a lot, but I do like JB Bore Cleaner. I don't know what grit it is but it cannot be much because it leaves no marks and changes no dimensions in the bore. I use it because it is effective and fast on stubborn copper.
I tried the JB Bore Bright a few times and always got the same result...a bore that copper fouled worse than it did before. Based on my experience lapping and cleaning and borescoping barrels you can have a bore that is too rough and it will foul, but you can also have a bore that is too smooth and it will foul also and most of the time worse.
The two barrels I tried the JB Bore Bright on were really shiny after I used it and did not stop fouling until they were lapped back to 400 grit. One of them always fouled before. To be clear, when I use the word "fouling or fouled" I am referring to copper smeared down the lands and grooves to the point it impairs accuracy.

Edit: I guess the JB Bore Bright has it's place...both barrels did show a slight increase in velocity on the chronograph and initially they shot a good group. But, as stated they quickly copper fouled {less than 50 rounds} and the groups open right up. Bottom line is that I don't know what it's "place" really is.

 

[CharlieNC]

I use Iosso on a leather to strop knife blades, and remove the grooves from rough sharpening and polish the blade. If you don't think it is quite abrasive then check it out on something you can clearly observe besides inside a rifle barrel.

 

[JRS]

If you use an abrasive paste in a Bartlein barrel, you lose their warranty.

 

[swadiver]

If you use an abrasive paste in a Bartlein barrel, you lose their warranty.

i know they state that. it's weird that Krieger has no objections to the use of an abrasive cleaner.

 

[dkhunt14]

I use Iosso on a leather to strop knife blades, and remove the grooves from rough sharpening and polish the blade. If you don't think it is quite abrasive then check it out on something you can clearly observe besides inside a rifle barrel.

The leather strap alone will polish and sharpen blades. The old timers always sharpened straight razors with one. Matt

 

[Nature Boy]

The leather strap alone will polish and sharpen blades

Note to self: stop using leather to clean your bore

 

[JRS]

The leather strap alone will polish and sharpen blades. The old timers always sharpened straight razors with one. Matt

A strop works like a sharpening steel. It helps keep the burr on a blade in check and keeps the edge aligned. Neither one actually sharpens the blade.

 

[CharlieNC]

The leather strap alone will polish and sharpen blades. The old timers always sharpened straight razors with one. Matt

True. I also use cardboard and wood to strop with, not just to remove the burr but observe polishing scratches. Point is it takes very little of anything to abrade and polish steel.