I have found Wipe Out to be great on copper but marginal on some carbon. I used Wipe Out almost exclusively for a couple of years (while loading with Varget) and found the throats of 3 rifles had so much carbon build up accuracy dropped off. It seems to change the carbon and leave a very hard to remove deposit behind. Try using Wipe Out after a few high round range sessions then scrub the bore with a good carbon cleaner and bronze brush, the black that comes out may surprise you. Most of the bench rest guys seem to be getting rid of the carbon first then using Wipe Out or another aggressive copper remover.

Cleaning link- http://www.6mmbr.com/borecleaning.html

As they say- Your mileage may vary.
Most shooters love the stuff, but I have learned to only use it after a good carbon cleaner. The funny thing is the same company is now marketing a specialized carbon cleaner, Carb Out.