Re: nylon or bronze brush in your precision rifle?
This popped up on the brownells Facebook page.. My answer was something like chop those pork chop's off the side of your face and come into the 21st century...
With the current regiment of cleaners I am not even sure why you need a bore brush anymore. But when I do use one its always nylon. Wipe-out, CR-6, Bore-tech, etc all seem to work well enough that a brush is not needed at all.