I use both nylon and bronze brushes, it depends on the situation and products being used.Mark, do you feel that nylon brushes are an issue using standard cleaning solvents?
Ben
Wipe Out seems to work better with Nylon, and when i'm doing shorter strings, works fine.
In my F Class rifle in 284 Win, I probably will have 60 or more shots on and it's been all day before I can clean, i use a bronze brush and a couple different solvents to go after both carbon and copper.
When I use an abrasive, and I will, sparingly, I only use it on patches and do a regular cleaning regimen after to make sure I get it all out.
I prefer JB Bore Paste(gray in color), I do not use the Bore Bright.
Later, Mark