Yes. You will get a false positive, blue coloration, but many have moved away from the nylon brush in hopes to remove copper. The bronze brush works much better and faster. Contrary to what some believe when used properly it will not harm your barrel. You have a real copper mine there. I hope that once you get it clean it will not appear so rapidly. Sometimes on a new chamber job there is a sharpness where the bullet transitions into the rifling. That leads to tearing of the bullet jacket and depositing copper all through the barrel.Bronze brush with copper removers?
Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1
Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen
The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz