This will make interesting reading, click on the URL below. http://home.sprynet.com/~frfrog/cleaners.htm

I'd like to have seen WipeOut included in the test components. I think the patch would have come out a deep blue.
JMO

Yeah that's a test done some time ago before wipeout was around I reckon, Wipeout is a top product it's only new here in Aussie and I reckon it's the best stuff around........Les

Thanks for the effort.

I'm certainly glad He told us what the results were, I'm not sure I could make any decision based on the pictures.

Next time I get copper on a steel pipe, I'll know what to use to get the copper off. Beyond that, I am not sure what was proven.

According to his tests, he rates Butch's near the bottom as a copper solvent. However, anyone who has actually properly used Butch's will tell you that it is a very effective solvent - in the bore.

Most �copper� solvents have some percentage of ammonia combined with petrochemicals and petroleum distillates like naphtha, kerosene, mineral oil. Water and some form of alcohol are added to increase the volume. The aggressiveness of a copper solvent is measured by the percentage of ammonium hydroxide within the product. Products like CR-10, Sweets, and Montana X-Treme contain relatively high percentages of ammonia. Products like Hoppes #9 contain very little.

To better stage the test, take a rifle and borescope it after using each cleaner - all other variables bing the same. You will quickly find what works and what does not. There is no mystery on how to quickly and safely clean a bore, however, most folks tend to either over clean or under clean their rifles.

Zero, as much as I like Butches, it does not hold a candle to copper removers such as CR-10. I have a routine where I clean with Butches between aggregates, and then go to CR-10 after every four or five cleanings. When Butches waives the white patch, CR-10 still finds a LOT of blue......

Then, if you give it a scrub with JB's or Flitz, you can come back, and find some more. JMO, Dutch.

Dutch - I agree totally. I use Butch's at the range and I have recently switched to Montana X-Treme for copper stripping. It is as aggressive as CR-10 or Sweets, yet safe to leave in your bore for more than 15 minutes.

I have a number of Krieger barrels that require nothing more than a few patches of Butch�s to stip copper. I use a Hawkeye borescope on my bores a few times a year to monitor throat erosion and to inspect the bore. I can see for myself what solvents are working and what are not.

My goal in cleaning is to do as little scrubbing as possible to remove 95% of better of the copper and powder fouling. It is easy to use weak solvents and over scrub your bore. The best thing to do is use aggressive solvents and limit the scrub time.

Zero, I agree.

The only thing I like better than CR-10 and JB's is Flitz. It seems a to have a little "something" in it that's particularly effective on copper. I don't bother with it on my Shilen, though. FWIW, Dutch.