Wipe Out does a great job of removing copper but leaves the carbon behind. Carbon build up will make a barrel shoot like crap. Always use a carbon remover before the Wipe Out.
http://www.6mmbr.com/borecleaning.html I agree. I once did a test in which I cleaned with Wipeout and patches until the patches came out clean. So after this you'd think the barrel was completely clean, right? Well, I followed this up with a cleaning using a Shooters Choice/Kroil blend and a bronze bore brush. That was followed by a wet patch of SC/Kroil. The powder fouling on that patch was considerably more than I expected to see. So, now I first clean for powder and if I think copper is a problem, only then do I use the Wipeout (or Montana Extreme 50BMG if I want it done now).
