A couple of questions about JB Bore Paste?

Question

I've run a boatload of patches through my Mosin and they're still coming out dirty. The bore is fairly bright, and I don't expect to get a mirror finish - I just want to clean out the crud. What is the difference between the regular and the red JB Bore Paste? Can I use it to clean the bolt assembly too? Are there similar products to JB Bore Paste which work just as well?

Thank you in advance.

Answer 1

Some surplus rifles are almost impossible to get a completely clean patch out of.



Like Jeff said, an overnight soaking of the bore can help, first off.



Use a bore brush with your usual solvent, then:



Take a spray bottle and mix 3/4 hot water and 1/4 ammonia. Stick it in the bore from the chamber, barrel facing down, and hose down the barrel -good-. (Don't get this mixture on the stock.) Run patches until dry, and then run patches with your usual solvent.



This should get the bore pretty darn clean.



Finish with oil, or CLP.

Answer 2

In addition to the excellent advice you've already been given, you might want to try a 10 minute wipe down with Sweet's 7.62 solvent. Put Sweet's on with a wet patch and let it sit for 10 minutes; (NO MORE!) then clean the bore as you normally would; and make certain that you remove all of the Sweet's solution from the barrel.



My own heavily used centerfire rifles get washed down with Sweet's, about, once a year. The rest of the time I use an excellent - non-toxic AND non-odorous - cleaning paste called, 'Iosso Bore Cleaner'. The white JB is the common grit; the red, is a very fine jeweler's polishing rouge. No matter how much you shoot if you regularly use a bore cleaner like Iosso, you won't need to use either Sweet's or JB very often.

Answer 3

Bore brush! Solvent, bore brushes and lots of elbow grease will get that bore clean.



In a really dirty bore... cork or plug the barrel and let your solvent sit inside the barrel over night...the solvents need time to work through and under thick layers of embeded crud.



JB Paste is a finishing polish (think honing or buffing process). You would be wasting your time to polish a bore that has embeded junk in the rifiling grooves. JB sells two levels of grit...I forget which is what but one is finer than the other.



Bolt... go to surplusarms.com and learn how to break the bolt down.. you can soak the parts in solvent... clean them up with brass brushes and q tips... lubricate and put it all back together.



If your bore is still a little dark but clean ... it will probably shoot FMJ well enough anyway.

Answer 4

One product I really like is Blue Wonder. It's a little pricey, but it gets the job done without a lot of elbow grease. I've used it on some rifles and pistols that went through a fire and it did an amazing job.