RE: Barrel cleaning?
Yes,if you look at the front of a bottle of Hoppes #9 it states " cleans bores and prevents RUST" In the instructions after the bore is clean it instructs to run a patch with Hoppes thru to protect the bore from rust.The Barnes and Birchwood Casey have a lot of ammonia to clean faster and they leave the bore dry while the hoppes gives rust prevention.I' ve used Hoppes for many years with never a rust in bore problem.
woods