Originally Posted by flyin lizard
Bore Tech Eliminator works real well for copper, no ammomia in it so it won't damage the barrel if iy gets left inside.
+1 on BTE. Saw a test where guys were dissolving bullet jackets using different solvents. If I recall the BTE did all of it's dissolving very quickly, then sort of nutralized. Based on that I would doubt it would be good for trying to soak copper out, but it will work for quick removal.