It's basically polishing media and oil so it may dry, but I don't think it "spoils".

 

I have a container that I have had for years and it is still good. I don't use it very often but it seems to work well when you need a good scrubbing. Works on the chambers as well. I used it back during the Moly days more often.

 

I work out of the same jar (blue one) from Brownells over 5 yrs. ago. It was never white... more like a brownish gray to begin with, but don't remember the consistency of it new. The data sheet doesn't spec shelf life and don't know who actually manufactures JB products as the jar shows 'licensed to Brownells". Brownell's tech support should be able to break the tie: 800-741-0015.

 

Still GTG

As mentioned, it can dry out, but it's still good. Stir it up, add a few drops of oil or solvent if it needs it.

I've used it for years to remove heavy copper fouling left by some surplus ammo.

Rich

 

Thanks, I appreciate the help.

 

JB is awesome. A Kroil soak and a patch scrub with JB is the only cleaning method I have found that will get your bore squeaky clean.

My tin from a year or so ago is still gray and it's consistency hasn't changed.

It is basically a very fine grit abrasive material. It may be alumina? Not sure, but the abrasive material has a lower hardness than steel/chrome. It has other stuff in it -some copper cutting agent and a low viscosity oil. If it dries out, just add some oil.

 

That stuff is like never seize bury it , 20 years later dig it back up and it still gets all over your fingers
My jar is over 10 years old
When it dries out I just ad oil and stir

 

I've gone through almost a whole jar in the last two years. I use it to break in rifle barrels the recommended way (the very slow, painstaking way)...and also just for routine cleaning. I usually run a few patches of Hoppes spread out over a day or two, then a fresh soaked patch of Hoppes, then a well coated patch with JB and run that through about 5-10 times and flip the patch around for the last pass, then another patch of Hoppes. after all that, I let it sit for a few more hours and run a few more patches through until it's clean.

very rarely I have to use it twice for the same barrel cleaning in between range trips.

 

I agree. I don't use it for routine cleaning.

After running about 400-500 rounds through my suppressed SP01 the past couple weeks, JB was great at getting that last garbage out. It is mind boggling how dirty suppressors make guns -I was surprised to see the bore much worse than usual... the action didn't surprise me.

I generally use a mix of Hoppes/Kroil and then sometimes MPro 7. M Pro 7 is probably the easiest and fastest solvent to get your bore fairly cleaned up. It is water based though (not a huge fan of that), so it isn't miscible with other cleaning solvents. It also washes up well. But man do I love the smell of Hoppes and Kroil...

 

Okay when it dries out what oil do you add? Baby, vegetable, mineral or motor?

 

Gun oil like RemOil or even motor oil.

 

M11293, you are hard core--"...I put it on my toast too..." Real butter is the only way to go.