The chief pro clean is a useful tool. I think the word "scrap" concerns people and scratched boresimmediatly come to mind. I have seen a barrel cleaned with traditional jag/patch/solvent then followed up with 1 swipe of the chiefs proclean tool. There wasburnt platic resin on the tool that the jag could not get to. Enough seen to convince me that the tool works. Do you need to use this tool between every shot, probably not. Over several shots, likely.

Larry/Harley are correct that this tool keeps the lands sharpwhich is needed to maintain accuracy.Think of these land edgesas aknife edge that requires a stone to resharpen. The nubs on the tool don't actually sharpen the lands itself but keeps them from being rounded off. The tool also gets out the plastic residue that the naked eye cannot see.

I have to agree with all the folks in here. I will continue to use a brass or bronze brush and a patched jag. Using the proper patch, one that is tight, will clean the lands as well as the grooves. I've found the best patch material is flannel that I buy in Walmart and cut into 1 1/2" squares. Its thick enough to get into the lands in the rifling.

Thats a good idea Bronko
Never thought about flannel