Stubborn copper streak...help!

I am with Ian .. Who cares.....

If it is there is is probably filling a void or two.. I never get to worried about cleaning every last bit out.. a good scrub and overnight with a foam.. done and done..

Last thing is a patch with EEZOX.. a anti rust dry lubricant.. Awesome stuff..
 
I regularily use sweets 7.62.

I just run a patch wet with Sweets 7.62 through the bore and "just" (1/2" or less) start another in the chamber to seal the chamber end (in the actual barrel, not the cartridge chamber). I then pour a dozen or so drops more of Sweets 7.62 down the muzzle.
I then cover the muzzle with duct tape to seal all the vapuor and liquid in the bore. Set the rifle horizontaly to even out the liquid inside the bore. Leave for a MAXIMUM of 15minutes, and push the patch that is sealing the chamber through to clean it out.

This has almost always worked to get out a stubborn copper streak out. You can repeat this once or twice if nessesary. I feel the ammonia fumes dont leave the barrel when you seal them in, and the ammonia vapour evenly distributes over 100% of the barrels interior surface. Otherwise they just waft out the muzzle and chamber when not sealed in.

Give it a try and see if it works for you.

Thats just my .02 cents.

P.S. Some may feel that this could damage the barrel, but trust me when I say I have done this for over 20 years with no ill effect on any of my barrels. The key is not to leave the Sweets 7.62 in your barrel for long periods of time.

Have fun, and straight shoot'in!
 
If you really want it out, get some janitorial grade ammonia.

No need to soak over time, a few wet patches, a few dry patches, all in front of a nylon brush done deal, clean!!!

I was shocked the first time I used it.
 
Use a new quality brush and JB Bore cleaner... patching JB isn't as effective. Then follow it with any copper solvent. Wipeout over night works...
I tried this method after a range outing this week. Works very well. I'd given up on JB and patches but with JB on a brush followed by a mild solvent the copper came out quite nicely. Thanks.
 
Living in the past

I agree, strong ammonia is the key for copper. Just don't breathe in the fumes, lol. - dan

I agree - I used to use ammonia until tests showed spider web cracks in some bores.

I switched to Kroil and JB , suffered through the effort for many years , then VOILA ! :D KG-12 - No harm to bore , VERY FEW rod strokes with a nylon brush or wet overnight copper disolve with only 3 or 4 strokes.

Be careful though - very pleasant smell - danger of cyanic poisoning with skin contact !

:ar15:
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